New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    A leter is taken out at random from the word 'ASSAM' and

    a leter is taken out at random from the word 'NAGALAND'. What is the probability that the two leters are the same?
    A 1/20 Correct Answer Incorrect Answer
    B 3/20 Correct Answer Incorrect Answer
    C 1/40 Correct Answer Incorrect Answer
    D 31/40 Correct Answer Incorrect Answer

    Solution

    In ASSAM, we have 2As, 2Ss, 1 M In NAGALAND, we have 2Ns, 3As, 1G,1L, 1D 1 letter is taken from each word-That needs to be the same. So, these can be As only. So, probability of A taken from ASSAM is 2C1/5C1 = 2/5 and A from NAGALAND is 3C1/8C1 = 3/8 So, required probability = (2/5)*(3/8) = 3/20

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