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    Question

     Some equations have been solved on the basis of

    certain system. Find the correct answer for the unsolved equations on that basis: If 62 × 24 = 20, 22 × 31 = 7 and 35 × 36 = 33 then 52 × 18 =?
    A 12 Correct Answer Incorrect Answer
    B 16 Correct Answer Incorrect Answer
    C 20 Correct Answer Incorrect Answer
    D 18 Correct Answer Incorrect Answer

    Solution

    62 × 24 = (6 × 2) + (2 ×4) = 12 + 8 = 20 22 × 31 = (2 × 2) + (3 × 1) = 2 + 3 = 5 35 × 36 = (3 × 5) + (3 × 6) = 15+ 18 = 33 52 × 18 = (5 × 2) + (1 × 8) = 10 + 8 = 18

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