Multiple Choice Questions on A basket contains 8 Blue and 10 Brown balls There is another basket which contains 6 Blue and 8 Brow........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A basket contains 8 Blue and 10 Brown balls There is another basket which contains 6 Blue and 8 Brow...........

Quantitative Aptitude ( CCS) Probability
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    A basket contains 8 Blue and 10 Brown balls. There is another basket which contains 6 Blue and 8 Brown balls. One ball is to drawn from either of the two baskets. What is the probability of drawing a Blue ball?

    55/126
    Correct Answer
    55/63
    Incorrect Answer
    37/126
    Incorrect Answer

    46/63

    Incorrect Answer
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    Explanation:

    P(choosing 1 basket)=1/2
    P(Blue ball from 1st basket)=1/2*8C1/18C1=4/18
    P(Blue ball from 2nd basket)=1/2*6C1/14C1=3/14
    P=4/18+3/14=55/126.

    Hence, option 1 is the correct answer.

    By: Amit Kumar
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