Probability

Are you preparing for campus placements,Banking,SSC, IAS, Insurance,Defence and other competitive exams? Then, make sure to take some time in practicing the Probability questions and answer in Quantitative Aptitude. Moreover, only those questions are included that are relevant and likely to be asked in any competitive exam. So, take these questions and answer, brush up your skills and practice to stay fully prepared for any your exam.

  • Q1.Direction : Study the given information carefully to answer the questions that follow. An urn contains 4 green, 5 blue, 2 red and 3 yellow marbles.
    If eight marbles are drawn at random, what is the probability that there are equal numbers of marbles of each colour?

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  • Q2.Direction : Study the given information carefully to answer the questions that follow. An urn contains 4 green, 5 blue, 2 red and 3 yellow marbles.
    If three marbles are drawn at random, what is the probability that none is green?

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  • Q3.Direction : Study the given information carefully to answer the questions that follow. An urn contains 4 green, 5 blue, 2 red and 3 yellow marbles.
    If three marbles are drawn at random, what is the probability that two are blue and two are red?

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  • Q4.If p[ 18, 0 ], then the probability that the graph of the function y = 16 x 2 + 8( p + 5 )x  7p  5 is strictly above the x–axis is

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  • Q5.The maximum value of P(A'B) if A and B are events at the same experiments with P(A) = 0.3, P(B) = 0.6

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  • Q6.For the two events A and B, P(A) = 0.38, P(B) = 0.41, then the value of P(A ̅ ) is

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  • Q7.There are 4 white, 6 red and 9 black balls in a bag. What is the probability that one ball chosen at random is neither white nor red ball?

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  • Q8.Prakash lies in 2/5 cases but Vikas speaks truth in 3/4 cases. If Prakash says that India have won the match, what is the probability that Vikas will state that India have lost the match?

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  • Q9.If 1+4k 4 , 1k 2 , 12k 2 are probabilities of three mutually exclusive events, then

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  • Q10. Mohan tells truth with probabilities P1&Soham with probabilities P2. If they make same statement, then the probability that their statement is true is …………….

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