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    Question

    Select the option that is related to the third number in

    the same way the second number is related to the first number. 23: 7 :: 29: ?
    A 6 Correct Answer Incorrect Answer
    B 5 Correct Answer Incorrect Answer
    C 2 Correct Answer Incorrect Answer
    D 4 Correct Answer Incorrect Answer

    Solution

    The second number is the sum of all the digits of the square of the first number. For [23, 7]: 23ยฒ = 529 โ†’ 5 + 2 + 9 = 16 โ†’ 1 + 6 = 7. For [29, ?]: 29ยฒ = 841 โ†’ 8 + 4 + 1 = 13 โ†’ 1 + 3 = 4

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