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    Question

    If 49 Γ— 45 = 45, 45 Γ— 69 = 35 and 67 Γ— 78 = 57, then

    39 Γ— 43 = ?
    A 37 Correct Answer Incorrect Answer
    B 30 Correct Answer Incorrect Answer
    C 35 Correct Answer Incorrect Answer
    D 34 Correct Answer Incorrect Answer

    Solution

    49 Γ— 45 β†’ (4 Γ— 9) + 4 + 5 = 36 + 9 = 45 45 Γ— 69 β†’ (4 Γ— 5) + 6 + 9 = 20 + 15 = 35 67 Γ— 78 β†’ (6 Γ— 7) + 7 + 8 = 42 + 15 = 57 39 Γ— 43 β†’ (3 Γ— 9) + 4 + 3 = 27 + 7 = 34

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