Let E be an event and S be the sample space. The basic understanding of this concept is very essential to understand different types of probability problems given in the examination and solve by probability … Example 1: What is the probability that a card taken from a standard deck, is an Ace? Math Formulas. Hence A and B are not mutually exclusive events. An experiment in which all possible outcomes are know and the exact output cannot be predicted in advance, is called a random experiment. The Probability definition might be confusing, but when you understand it you can easily solve even the toughest problems. In the case of simple events, we take the probability of occurrence of single events. - Cost Price (C.P) 2.Loss = C.P. When a die is thrown or rolled, the outcome is the number that appears on its upper face and it is a random integer from one to six, each value being equally likely. Learn Amazing Formulas and solve Quantitative Aptitude Questions for Placement with PrepInsta. Hence there are $6$ exhaustive events. Difficult questions on Probability and its explanation with examples. Permutations and combinations. Here A $\cap$ B $\neq \phi$. This is the aptitude questions and answers section on "Probability" with explanation for various interview, competitive examination and entrance test. That means in a total of 5 occurrences, 2 times the occurrences are in my favor. (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. Revise with SSC Math quick notes, containing formulas and short tricks. Solved examples with detailed answer description, explanation are given and it would be easy to understand. of possible outcomes) P(E) = n(E)/n(U) where n(E)= no. Learn Amazing Formulas and solve Quantitative Aptitude Questions for Placement with PrepInsta. These are all called face cards. Drawing a card from a pack of well-shuffled cards. Solved examples with detailed answer description, explanation are given and it would be easy to understand. In the above four types, we will have 13 cards in each type. Let A and B are two events with sample space S. Then, A $\cup$ B is the event that either A or B or both occur. Statistics is a branch of mathematics which deals with numbers and data analysis. Example Questions Using Probability Formulas. © 2009 - 2020 by IndiaBIX™ Technologies. Learn and practice basic word and conditional probability aptitude questions with shortcuts, useful tips to … Ty. August 25, 2020 . 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. Basic formulas for Probability. Probability Range: 0 ≤ P(A) ≤ 1; Rule of Addition: P(A∪B) = P(A) + P(B) – P(A∩B) Rule of Complementary Events: P(A’) + P(A) = 1; Disjoint Events: P(A∩B) = 0; Independent Events: P(A∩B) = P(A) . Probability can range in from 0 to 1, where 0 means the event to be an impossible one and 1 indicates a certain event. An and having X1, X2, X3, X4, ……. Spade - 13 cards 4. = (100-Loss%)/100*C.P. There are four types of cards in the pack of 52 cards. Then, $$E \subseteq S$$. Aptitude on Probability for bank jobs, government jobs, private jobs. Logarithms, surds and indices. Solved examples with detailed answer description, explanation are given and it would be easy to understand. Profit and Loss, Discount. Kings, Queens and Jacks are called face cards. Let us come to know the following stuff related the pack of 52 playing cards. It is shown in the picture given below. of Favorable Outcomes/Total no. 3 TIPS on cracking Aptitude Questions on Probability Looking for Questions instead of tips? Conditional Probability. Quantitative Aptitude Formulas & Shortcut Tricks for All Govt Jobs Exam Quantitative Aptitude Formulae List for Govt. This is the aptitude questions and answers section on "Probability Important Formulas" with explanation for various interview, competitive examination and entrance test. When a coin is tossed, we get either Head or Tail. For any events A and B we have – P (A ∪ B) = P (A) + P (B) – P (A ∩ B) If denotes (not A), then P () = 1 – P (A) So this is the basic idea of Probability. Mutually Dependent Events: 2 or more events are that are such that the occurrence of one affects the occurrence of the other. Let us come to know the following stuff related the pack of 52 playing cards. Hence there are $2$ exhaustive events. Plural of die is dice. P(E) = $$\frac{n(E)}{n(S)}$$ Results on Probability: P(S) = 1 $$0 \le P(E) \le 1$$ $$P( \phi )$$ = 0. We can define the word ‘Probability’ as - A measure of how likely an event is to occur’. Consider a die is thrown and A be the event of getting $2$ or $4$ or $6$ and B be the event of getting $4$ or $5$ or 6. Aptitude. That means in a total of 5 occurrences, 2 times the occurrences are in my favor. It has 13 cards of each suit, name Spades, Clubs, Hearts and Diamonds. Solution: Total number of cards a standard pack contains = 52. They have a high probability of being on the exam. That doesn’t mean that other topics are less important. Mutually Dependent Events: 2 or more events are that are such that the occurrence of one affects the occurrence of the other. We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. A quantitative measure of the chance of occurrence of a particular event. Picking up a ball of certain colour from a bag containing balls of different colours. Use this book to supplement your own formula book and see if you can add anything additional to it from my compilation. Probability of head in a toss=1/2 Head and Tail cannot come simultaneously. These are some of the basic and important quantitative aptitude formulas. Then the conditional probability of the occurrence of B given that A has already occurred is. The questions from this topic are mainly checking the skill of an aspirant in logical counting. Statistics is the study of the collection, analysis, interpretation, presentation, and organization of data. The four different types of cards are shown in the picture given below. Go to Aptitude, Reasoning and Quants Formulas & Notes Probability . Probability: Probability of Event: No. Solved examples with detailed answer description, explanation are given and it would be easy to understand. • Chapter-wise math formulae can be downloaded in PDF format by Students from class 6 to 12. Follow the above strategies to start your preparation for Quantitative Aptitude Section in SSC CGL Tier-1. Follow the above strategies to start your preparation for Quantitative Aptitude Section in SSC CGL Tier-1. Number of Ace cards in a deck of cards = 4. Then. Let us also see probability problems. Probability is a measure of how likely an event is to occur. D. 4/1. Favorable number of outcomes; Total number of outcomes; Probability ranges between 0 and 1. Hence occurrence of Head and Tail are mutually exclusive events. Two types in black color and other two types in red color. 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. admin - January 1, 2018. Sample Space is the set of all possible outcomes of an experiment. P(B) Conditional Probability: P(A | B) = P(A∩B) / P(B) Bayes Formula: P(A | B) = … In exams only Dice, Coin and ball related examples are given. Quantitative Aptitude Formulas & Shortcut Tricks for All Govt Jobs Exam Quantitative Aptitude Formulae List for Govt. When a coin is tossed, we get either Head or Tail. To clear the concept of solving Probability Questions, there are … = (100+Gain%)/100*C.P. Or, P (A) = n (A)/n (S) Where, P (A) is the probability of an event “A”. List of Formulas useful for solving aptitude questions 1.Gain = Selling Price (S.P.) Identifying when a probability is a conditional probability in a word problem The probability of all the events in a sample space adds up to 1. This is the aptitude questions and answers section on "Probability" with explanation for various interview, competitive examination and entrance test. When we toss a coin, the outcome will be either Head (H) or Tail (T). If one student is picked from a group of 6 boys and 7 girls. “Success is the progressive realization of a worthy goal! When we have two or more groups whose individual averages are known, then to find the combined average of all elements of all the groups we use weighted average. 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. Probability Important Formulas on Aptitude questions and answers for interview, competitive examination, entrance test and Career Test Probability of an Event. The probability of event A is often written as P(A). Learn Quantitative Aptitude – Quants : Formulas, Tips, Tricks, Shortcuts & Questions. 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. 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