Probability Aptitude Mcq Pdf Model Questions & Answers, Practice Test for ibps po prelims 2024 2025
ibps po prelims 2024 2025 SYLLABUS WISE SUBJECTS MCQs
Lcm & Hcf
Simplification
Power, Indices And Surds
Ratio & Proportion
Time & Work
Time & Distance
Mensuration
Data Sufficiency
Average
Profit & Loss
Alligation & Mixtures
Compound Interest
Number Series
Quadratic Equations
Probability
Permutations & Combination
The chance of winning the race of the horse A is 1/5 and that of horse B is 1/6. What is the probability that the race will be won by A or B ?
Answer: (b)
Let P(A) be the probability that the race will be won by A and P(B) be the probability that the race will be won by B.
∴ P(A) = $1/5$ and P(B) = $1/6$
∴ Probability that the race will be won by
A or B = P(A) + P(B) = $1/5 + 1/6 = 11/30$
Two numbers a and b are chosen at random from the set of first 30 natural numbers. The probability that a 2 – b 2 is divisible by 3 is:
Answer: (a)
Out of 30 numbers 2 numbers can be chosen in $^30C_2$ ways.
So, exhaustive number of cases = $^30C_2$ = 435
Since $a^2 – b^2$ is divisible by 3 if either a and b are divisible by numbers, of cases = $^10C_2 + ^20C_2$ = 235
Hence, required probability = $235/435 = 47/87$
The probabilities that A and B will die within a year are p and q respectively, then the probability that only one of them will be alive at the end of the year is -
Answer: (d)
An urn contains 4 green, 5 blue, 2 red and 3 yellow marbles. If two marbles are drawn at random, what is the probability that both are red or at least one is red ?
Answer: (e)
According to question,
n(S) = $^14C_2 = {14!}/{(14 - 2)! 2!} = {14 × 13}/{2 × 1} = 91$
∴ Probability of at least one red ball
= 1 - $^12C_2/^14C_2 = 1 - 66/91 = {91 - 66}/91 = 25/91$
An integer is chosen at random from the numbers 1, 2, ....., 25. The probability that the chosen number is divisible by 3 or 4, is
Answer: (b)
P (3 ∪ 4) = P(c) + P(d) – P (3 ∩ 4)
= $8/25 + 6/25 - 2/25 = 12/25$
ibps po prelims 2024 2025 IMPORTANT QUESTION AND ANSWERS
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IBPS PO Prelims LCM and HCF Practice MCQ Questions, PDF »
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IBPS PO Prelims Simplification Aptitude Questions, PDF »
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IBPS PO Prelims Power Indices and Surds Questions, PDF »
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IBPS PO Ratio and Proportion Problems and Solutions PDF »
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Top IBPS PO Prelims Time and Work Aptitude Model MCQ, PDF »
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IBPS PO Prelims Time and Distance Model Questions, PDF »
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IBPS PO Prelims Mensuration Aptitude Practice MCQ, PDF »
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IBPS PO Prelims Data Sufficiency Questions Answers, PDF »
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Top 100+ IBPS PO Prelims Average Questions Answers, PDF »
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Top 100+ IBPS PO Prelims Profit and Loss Model MCQ, PDF »
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100+ IBPS Mixture and Alligation MCQ with Solution, PDF »
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IBPS PO Prelims Compound Interest MCQ with Solution, PDF »
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100+ IBPS Number Series Aptitude MCQ with Solution, PDF »
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Top 100+ IBPS Quadratic Equations MCQ with Solution, PDF »
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100+ IBPS PO Prelims Probability Questions Answers, PDF »
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Top IBPS PO Prelims Permutation and Combination Mcq, PDF »
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