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    Question

    If 521 = 64 , 8423 = 289 , 716 = 196 , then 345 =

    ?
    A 196 Correct Answer Incorrect Answer
    B 225 Correct Answer Incorrect Answer
    C 144 Correct Answer Incorrect Answer
    D 289 Correct Answer Incorrect Answer

    Solution

    The logic followed here is: The square of the sum of all the numbers.

    In 521 → (5 + 2 + 1)² = 8² = 64


    In 8423 → (8 + 4 + 2 + 3)² = 17² = 289

    In 716 → (7 + 1 + 6)² = 14² = 196

    Similarly, in 345 =? → (3 + 4 + 5)² = 12² = 144

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