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      Question

      If 49 Γ— 23 = 41, 26 Γ— 47 = 23 and 64 Γ— 99 = 42, then

      57Γ— 68 = ?
      A 44 Correct Answer Incorrect Answer
      B 40 Correct Answer Incorrect Answer
      C 42 Correct Answer Incorrect Answer
      D 49 Correct Answer Incorrect Answer

      Solution

      49 Γ— 23 β†’ (4 Γ— 9) + 2 + 3 = 36 + 5 = 41 26 Γ— 47 β†’ (2 Γ— 6) + 4 + 7 = 12 + 11 = 23 64 Γ— 99 β†’ (6 Γ— 4) + 9 + 9 = 24 + 18 = 42 57 Γ— 68 β†’ (5 Γ— 7) + 6 + 8 = 35 + 14 = 49

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