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    Question

    Study the given pattern carefully and select the number

    that can replace the question mark (?) in it. First row: 42, 54, 39 Second row: 78, 51, 56 Third row: 66, 36, ? (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13-Operations on 13 such as adding /deleting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
    A 58 Correct Answer Incorrect Answer
    B 72 Correct Answer Incorrect Answer
    C 45 Correct Answer Incorrect Answer
    D 16 Correct Answer Incorrect Answer

    Solution

    The logic followed in the given series is: (First term ÷ 2) + (Second term ÷ 3) = Third term First row: 42, 54, 39 (42 ÷ 2) + (54 ÷ 3) = 39 21 + 18 = 39 39 = 39 Second row: 78, 51, 56 (78 ÷ 2) + (51 ÷ 3) = 56 39 + 17 = 56 56 = 56 Third row: 66, 36, ? (66 ÷ 2) + (36 ÷ 3) = ? 33 + 12 = ? ? = 45 Hence, the correct answer is (C).

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