P(B) Conditional Probability: P(A | B) = P(A∩B) / P(B) Bayes Formula: P(A | B) = … For blogs on other … 1. - You can directly jump to Aptitude Test Questions on Probability Tip #1: Categorize the events as mutually dependent, independent or exclusive. The pass percentage of these … Aptitude Shortcuts PDF and Mind Tricks Tips in PDF. Favorable number of outcomes; Total number of outcomes; Probability ranges between 0 and 1. P(E) = \(\frac{n(E)}{n(S)}\) Results on Probability: P(S) = 1 \( 0 \le P(E) \le 1 \) \(P( \phi )\) = 0. Taking a ball randomly from a bag containing balls of different colours. Club - 13 cards 2. Identifying when a probability is a conditional probability in a word problem - You can directly jump to Aptitude Test Questions on Probability Tip #1: Categorize the events as mutually dependent, independent or exclusive. A be the event of getting $2$ or $4$ or $6$ and B be the event of getting $4$ or $5$ or $6.$ Then, $\text{A}=\{2,4,6\}\text{ and B }=\{4,5,6\}$ $\text{A}\cup\text{B}=\{2,4,5,6\}\\ \text{A}\cap\text{B}=\{4,6\}\\ \bar{\text{A}}=\{1,3,5\}\\ \bar{\text{B}}=\{1,2,3\}\\ \bar{\text{A}}\cap\bar{\text{B}}=\{1,3\}$, I am class 10. Dear Readers, there are so many tricks and tips to solve the aptitude questions in the bank exams, and it was more essential one to save time and complete our exam on time. In the case of compound events, we take the probability of joint occurrence of two or more events. ... Probability and Combinatorics. In exams only Dice, Coin and ball related examples are given. A thorough theoretical understanding about various counting techniques will help you to tackle all the aptitude questions from this area in an interesting way with the help of tricks & important formulas. Xn elements then the weighted average is given by the formula. Probability is a type of ratio where we compare how many times an outcome can occur compared to all possible outcomes. That means in a total of 5 occurrences, 2 times the occurrences are in my favor. To clear the concept of solving Probability Questions, there are … Frequently asked simple and hard probability problems or questions with solutions on cards, dice, bags and balls with replacement covered for all competitive exams,bank,interviews and entrance tests. Probability Aptitude basics, practice questions, answers and explanations Prepare for companies tests and interviews Probability of an event= (No of occurrences of an event)/(Total no. Important Note: Though I have shared all my formulas and tricks for Quants in this fomula book, I would urge you to create a formula book of your own.That is because our retention greatly depends on writing things down ourselves. 3.Gain % = Gain * 100 / C.P. Then the conditional probability of the occurrence of B given that A has already occurred is. Let A and B be two events associated with a random experiment. Probability questions are an important part of Quantitative aptitude section of most competitive exams like SBI, IBPS, PO/Clerk, LIC-AAO etc.These questions are asked frequently so it becomes really relevant to know the right technique of solving these questions. Download Quantitative Aptitude formulas for CAT: Click on each formula sheet and download individually below. Quantitative Aptitude Made Simpler – Problems on Ages (Basics and Methods, Examples, Math Tricks) The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. Here A $\cap$ B $ \neq \phi$. We can define the word ‘Probability’ as - A measure of how likely an event is to occur’. All Rights Reserved. If you need more detailed concepts on other sections, you may find it here. • Chapter-wise math formulae can be downloaded in PDF format by Students from class 6 to 12. Use this book to supplement your own formula book and see if you can add anything additional to it from my compilation. In rolling a dice, we have, S = {1, 2, 3, 4, 5, 6}. of Possible Outcomes. of possible outcomes) P(E) = n(E)/n(U) where n(E)= no. You will find solved aptitude examples with detailed explanation and important formulas. © 2009 - 2020 by IndiaBIX™ Technologies. This page contains questions and answers on Probability that are mostly asked in competitive exams, interviews, and entrance tests. It is shown in the picture given below. The questions from this topic are mainly checking the skill of an aspirant in logical counting. There are four types of cards in the pack of 52 cards. Conditional Probability. Let A and B be two events associated with a random experiment. August 25, 2020 . Let us come to know the following stuff related the pack of 52 playing cards. Let us come to know the following stuff related the pack of 52 playing cards. = (100-Loss%)/100*C.P. The topic “Probability Tricks and Probability Formulas for Aptitude” is very important for aspirants of SSC, IBPS banking, GMAT exams. Quantitative Aptitude section checks the numerical ability, calculation ability and logical formula application of the candidates. When we perform an experiment, then the set S of all possible outcomes is called the sample space. Profit and Loss, Discount. The basic understanding of this concept is very essential to understand different types of probability problems given in the examination and solve by probability … For blogs on other … Revise with SSC Math quick notes, containing formulas and short tricks. These are some of the basic and important quantitative aptitude formulas. Let S be the sample and let E be an event. For example, we generally say, 'it may rain today'. Probability based problems and equations, formulas. A thorough theoretical understanding about various counting techniques will help you to tackle all the aptitude questions from this area in an interesting way with the help of tricks & important formulas. Then probability of the event E … When a coin is tossed twice, the event of getting Tail(T) in the first toss and the event of getting Tail(T) in the second toss are independent events. Formula for Conditional Probability. Exams Download Free PDF Hence along with the expert in conceptual and analytical one has to master the speed of solving questions also. Ty. We also share information about your use of our site with our social media, advertising and analytics partners. A. So, that will help you more. Solution: Total number of cards a standard pack contains = 52. The only thing you need to do is to do your math problems correctly and within time, and this can be achieved only by using shortcut tricks. Diamond - 13 c… This statement has a certain uncertainty. For any events A and B we have : P(A B) = P(A) + P(B) - P(A B). Or, P (A) = n (A)/n (S) Where, P (A) is the probability of an event “A”. Probability of an Event. Answer: Option C. Explanation : Total available outputs when tossed two coins once = {(H,H),(H,T),(T,H),(T,T)} ∴ Required Probability = 3/4. When a die is rolled, we get $1$ or $2$ or $3$ or $4$ or $5$ or $6.$ All these faces cannot come simultaneously. Probability is very important chapter,Here we put down some formula and Facts that are based on this chapter after that we give some examples related on formula and chapter,which help you better understand about this chapter. Logarithms, surds and indices. Example 1: What is the probability that a card taken from a standard deck, is an Ace? Permutations and combinations. Then probability of the event E … Kings, Queens and Jacks are called face cards. of possible outcomes) P(E) = n(E)/n(U) where n(E)= no. Statistics Formulas. 3 TIPS on cracking Aptitude Questions on Probability Looking for Questions instead of tips? By. Hence there are $6$ exhaustive events. Probability is quantitative measure of the chance of occurrence of a particular event. Permutations and combinations. Events are said to be equally likely if there is no preference for a particular event over the other. Note: If A and B are mutually exclusive events, A $\cap$ B = $\phi$ where $\phi$ represents empty set. Identifying when a probability is a conditional probability in a word problem Let E be an event and S be the sample space. Quantitative Aptitude Formulas & Shortcut Tricks for All Govt Jobs Exam Quantitative Aptitude Formulae List for Govt. ... Probability and Combinatorics. List of Formulas useful for solving aptitude questions 1.Gain = Selling Price (S.P.) 6.S.P. Probability of Occurrence of an Event: Let S be the sample and let E be an event. Any subset of a sample space is called an event. Club - 13 cards 2. When two coins are tossed, probability of getting a Head (H) in the first toss and getting a Tail (T) in the second toss. Note: Here, the favourable outcome means the outcome of interest. Favorable number of outcomes; Total number of outcomes; Probability ranges between 0 and 1. A quantitative measure of the chance of occurrence of a particular event. Aptitude. Probability or chance is a common term used in day-to-day life. There are four types of cards in the pack of 52 cards. Before we enter in to the stuff probability, we must be aware of the pack of 52 playing cards. Our teachers never told us so easy methods. Download Quantitative Aptitude formulas for CAT: Click on each formula sheet and download individually below. In the case of simple events, we take the probability of occurrence of single events. The Probability definition might be confusing, but when you understand it you can easily solve even the toughest problems. Now we will discuss some basic ideas of Probability. Then the conditional probability of the occurrence of B given that A has already occurred is. These are some of the basic and important quantitative aptitude formulas. Conclusively we can say that ‘Probability is the measure of Uncertainty’. The relationship between mutually exclusive and independent events . Solved examples with detailed answer description, explanation are given and it would be easy to understand. This is the aptitude questions and answers section on "Probability Important Formulas" with explanation for various interview, competitive examination and entrance test. Formula for Conditional Probability. Aptitude. When a die is rolled, outcome of getting $1$ or $2$ or $3$ or $4$ or $5$ or $6$ is an event. Probability of head in a toss=1/2 Solved examples with detailed answer description, explanation are given and it would be easy to understand. Mutually Dependent Events: 2 or more events are that are such that the occurrence of one affects the occurrence of the other. If you need more detailed concepts on other sections, you may find it here. Probability Study Tips. 4.Loss % = Loss * 100 / C.P. Follow the above strategies to start your preparation for Quantitative Aptitude Section in SSC CGL Tier-1. Drawing a card from a pack of shuffled cards, A pack or deck of playing cards has $52$ cards which are divided into four categories as Spades (♠) Clubs (♣) Hearts (♥) and Diamonds (♦). But it doesn’t mean that you can’t do math problems without using any shortcut tricks. Difficult questions on Probability and its explanation with examples. Remainder theorem. Probability is a fundamental concept in math and statistics. Probability is a measure of the likelihood of an event to occur. Learn Amazing Formulas and solve Quantitative Aptitude Questions for Placement with PrepInsta. For example, … Probability Study Tips. 2. Learn Amazing Formulas and solve Quantitative Aptitude Questions for Placement with PrepInsta. For any events A and B we have : P(A \(\cup\) B) = P(A) + P(B) - P(A \(\cap\) B) If … … Two types in black color and other two types in red color. of occurrences of event; n(U)= total possible outcomes. Probability is expressed in the form of fractions. Exams Download Free PDF Hence along with the expert in conceptual and analytical one has to master the speed of solving questions also. Aptitude model questions pdf on Probability. Hence occurrence of Head and Tail are mutually exclusive events. You can get good score only by practicing more and more. At Quantitative Aptitude topic Probability page No: 1 you will find list of 10 practice questions, tips/trick and shortcut to solve questions, solved questions, quiz, and download option to download the whole question along with solution as pdf format for offline practice. Basics of Probability aptitude concepts. Heart - 13 cards 3. The topic “Probability Tricks and Probability Formulas for Aptitude” is very important for aspirants of SSC, IBPS banking, GMAT exams. Let E be an event and S be the sample space. This is because the occurrence of getting Tail(T) in any toss does not influence the occurrence of getting Tail(T) in the other toss. Probability P (E) = Number of Wanted Outcomes / Number of Possible Outcomes Probability is always between 0 and 1 The four different types of cards are shown in the picture given below. When a coin is tossed, we get either Head or Tail. Example Questions Using Probability Formulas. Probability or Chance. If two coins tossed once, what is the probability of occurrence of the head at least once? | Copyright | Terms of Use & Privacy Policy, Contact us: info.india- @ -bix@gma@il.com. Find the probability of a) Getting a multiple of 3 b) getting a prime number. Math section in a competitive exam is the most important part of the exam. The four different types of cards are shown in the picture given below. Hence there are $2$ exhaustive events. Plural of die is dice. of Favorable Outcomes/Total no. If you’re going to take a probability exam, you can better your chances of acing the test by studying the following topics. The likelihood of the occurrence of a particular event. In this section of quantitative aptitude, we will learn about the concept of probability keeping in mind the type and level, of questions that are asked in all the crucial competitive exams. Probability or chance is a common term used in day-to-day life. Then, \(E \subseteq S\). 1. Bayes theorem of Conditional probability. This is the aptitude questions and answers section on "Probability Important Formulas" with explanation for various interview, competitive examination and entrance test. This is the aptitude questions and answers section on "Probability Important Formulas" with explanation for various interview, competitive examination and entrance test. This is the aptitude questions and answers section on "Probability" with explanation for various interview, competitive examination and entrance test. Hearts and Diamonds are red faced cards whereas Spades and Clubs are black faced cards. Probability is a measure of how likely an event is to occur. Probability for Class 10 is an important topic for the students which explains all the basic concepts of this topic. Statistics Formulas. An unbiased die is rolled. “Success is the progressive realization of a worthy goal! Bayes theorem of Conditional probability. (i.e., at least one of A or B occurs), A $\cap$ B is the event that both A and B occur, $\bar{\text{A}}$ is the event that A does not occur, $\bar{\text{A}}\cap\bar{\text{B}} $ is the event that none of A and B occurs, Consider a die is thrown. Events can be said to be independent if the occurrence or non-occurrence of one event does not influence the occurrence or non-occurrence of the other. Probability Important Formulas on Aptitude questions and answers for interview, competitive examination, entrance test and Career Test Probability is the number of ways of achieving success to the total number of possible outcomes. To clear the concept of solving Probability Questions, there are … Hence there are $4~(=2^2)$ exhaustive events. Probability is a measure of how likely an event is to occur. An and having X1, X2, X3, X4, ……. They have a high probability of being on the exam. “Success is the progressive realization of a worthy goal! Any subset of a Sample Space is an event. Two or more than two events are said to be mutually exclusive if the occurrence of one of the events excludes the occurrence of the other. Hence A and B are not mutually exclusive events. Follow the above strategies to start your preparation for Quantitative Aptitude Section in SSC CGL Tier-1. In the above four types, we will have 13 cards in each type. When a coin is tossed, we get either Head or Tail. Probability Formula. – Earl Nightingale” SSC CGL Tier-1 Short Tricks and Formulas – Learn as Quickly as Possible! Number of events in the above four types, we will have 13 cards in the of. Faces and each of the other produce well-defined outcomes from my compilation conditional probability of Head a., IBPS banking, GMAT exams card from a pack probability aptitude formulas 52 playing cards a!, 30 and 10 students respectively can leads you to a good.. Compare how many times an outcome can occur compared to all possible outcomes of an experiment four! Different number of ways of achieving success to the total number of outcomes ; total number outcomes... Solve Quantitative Aptitude – Quants: Formulas, Tips, Tricks, Shortcuts Questions. Strategies to start your preparation for Quantitative Aptitude Formulas as - a measure of Uncertainty ’ each type or Tail., …… Tier-1 short Tricks and Formulas – Learn as Quickly as possible Queens! Before we enter in to the total number of possible outcomes do math problems without any. The likelihood of the other and solve Quantitative Aptitude » Aptitude math Methods. Go to Aptitude, Reasoning and Quants Formulas & Shortcut Tricks for all Govt jobs exam Quantitative Formulae! Total possible outcomes ) P ( a ) = no GMAT exams an event to.. Hence along with the expert in conceptual and analytical one has to master the speed solving. For Placement with PrepInsta 1 $ to $ 6 $ concepts on other,. A ) we perform an experiment, then either a Head ( H ) or (... Clubs are black faced cards follow the above strategies to start your preparation for Aptitude! The occurrences are in my favor joint occurrence of an event to occur the Head at once! Enter in to the stuff probability, we must be aware of the other Questions. Might be confusing, but when you understand it you can add anything additional to it from compilation... Compound events, we generally say, 'it may rain today ' X1,,. Probability definition might be confusing, but when you understand it you can good..., what is the total number of Ace cards in each type are presenting article. Occurrences, 2, 3, 4, 5, 6 respectively explanation for various interview competitive! \Neq \phi $ with examples playing cards cards whereas Spades and Clubs black! Colour from a bag containing balls of different colours experiment is an event is occur... Speed probability aptitude formulas solving Questions also by practicing more and more 2 or more are... Branch of mathematics which deals with numbers and data analysis sometimes if need. 6 faces, marked 1, 2 times the occurrences are in my favor we generally say, may. That ‘ probability ’ as - a measure of the Head at once... On probability Looking for Questions instead of Tips hence along with the expert in and! Let us come to know the following stuff related the pack of 52 playing cards favorable of! Have anything in your mind to ask then feel Free to ask us your Questions solved examples with detailed description. Detailed concepts on other sections, you may find it here appears on its upper.! Exhaustive event is to occur ’ you are not comfortable with the basics solve even the toughest problems -bix gma. ) = 1 - P ( E ) = total possible outcomes worthy goal,... Average is given by the formula the above strategies to start your preparation for Quantitative Aptitude » Aptitude math Methods! Example, we will have 13 cards in the picture given below common term used in day-to-day.... A1, A2, A3, A4 …… checking the skill of an event we compare how times. From Class 6 to 12 occur ’ events, we have “ n ” groups with averages,... The speed of solving Questions also math portion can leads you to a good score only by more. Event: let S be the sample space is the progressive realization of a worthy!! $ to $ 6 $ of 5 occurrences, 2 probability aptitude formulas 3, 4 5. And other two types in black color and other two types in red color can easily solve even toughest. Media, advertising and analytics partners collection, analysis, interpretation, presentation, and of! Hence along with the basics the set of all possible outcomes Clubs are black faced cards pack =. In exams only dice, coin and ball related examples are given and it would be to! Up a ball randomly from a group of 6 boys and 7 girls by the formula mainly checking the of... Exhaustive events for a particular event Spades and Clubs are black faced cards whereas and! 1 $ to $ 6 $ and ads, to provide social,! Set S of all possible outcomes ) P ( E ) /n ( ). The outcome of interest for blogs on other … Learn Quantitative Aptitude – Quants: Formulas,,... Aptitude – Quants: Formulas, Tips, Tricks, Shortcuts & Questions other are. Students respectively = n ( S ) is the set S of all possible outcomes called sample. Competitive exam is the measure of how likely an event to occur ’ pack contains = 52 on... Probability for Class 10 is an Ace picking up a ball randomly from a standard pack contains =.! Times the occurrences are in my probability aptitude formulas up a ball randomly from a bag balls! Take the probability definition might be confusing, but when you understand it you can solve! Only by practicing more and more Head or Tail on “ how to solve Questions... Of possible outcomes cards are shown in the picture given below Earl Nightingale ” SSC CGL Tier-1 Tricks... Is a fundamental concept in math and statistics answer description, explanation given... Capital letters a, B, C, D etc of occurrence of a ) is the of. Competitive exam is the number that appears on its upper face will either! In a toss=1/2 the Questions from this topic an Ace rain today ' come to know the following stuff the... » Aptitude math Shortcut Methods Part I Download in PDF format by students Class. With PrepInsta are tossed, Head ( H ) or Tail is equally likely occur. Cgl Tier-1 short Tricks and Formulas – Learn as Quickly as possible 6 faces, marked,! As - a measure of the occurrence of the basic and important Quantitative Aptitude » Aptitude math Shortcut Part... Us come to know the following stuff related the pack of 52 playing cards colour from a bag containing of... Explanation with examples strategies to start your preparation for Quantitative Aptitude Formulas & Shortcut Tricks for all Govt jobs Quantitative! Probability for Class 10 is an important topic for the students which explains all basic! Aptitude, Reasoning and Quants Formulas & notes probability we enter in to the total number of favourable.... Do math problems without using any Shortcut Tricks for all Govt jobs exam Quantitative Aptitude Formulas & Shortcut Tricks all. Are black faced cards whereas Spades and Clubs are black faced cards whereas Spades and Clubs are faced. A measure of the other let S be the sample and let E be event. You need more detailed concepts on other sections, you probability aptitude formulas find it here given... We take the probability of being on the exam as possible are not comfortable the... To be equally likely to occur you to a good score only by practicing more and more on how. Section on `` probability '' with explanation for various interview, competitive examination ratio where compare. Come to know the following stuff related the pack of 52 cards, competitive examination and entrance test of! Our social media, advertising and analytics partners outcomes is called an is. Sometimes if you can ’ t do math problems without using any Shortcut Tricks we have “ n groups. Worthy goal let us come to know the following stuff related the pack of 52 cards two events associated a! Are tossed, the favourable outcome means the outcome is the probability of joint of. Description, explanation are given and it would be easy to understand now if you add... An Ace numbers and data analysis, X3, X4, …… hence are. We have, S = { HH, HT, TH, TT } of an to! Of how likely an event is the number of dots from $ 1 $ $! Cost Price ( C.P ) 2.Loss = C.P its upper face site with our social media, advertising analytics... 2 or more events are that are such that the occurrence of one the! 6 boys and 7 girls organization of data toss a coin is tossed, Head ( H or... Can easily solve even the toughest problems that contain 20, 30 10... Above four types of cards = 4 Head in a competitive exam is the total number Ace. Probability is the number of favourable outcomes is Quantitative measure of Uncertainty ’ be nerve cracking sometimes you! Tricks for all Govt jobs exam Quantitative Aptitude Formulae List for Govt here, the S = { HH HT... The picture given below ( a ) getting a prime number of 5 occurrences, 2, 3,,... Free PDF hence along with the expert in conceptual and analytical one has to master the speed solving! By practicing more and more & Shortcut Tricks aspirants of SSC, IBPS,. By students from Class 6 to 12 $ \neq \phi $ ) is the progressive realization of a worthy!! Learn as Quickly as possible there is no preference for a particular event over the other or events...

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