Question
If 23 # 45 = 74 and 78 # 99 = 48, then 56 # 78 =
?Solution
(2 x 3) + (4 x 5) = 6 + 20 = 26 (7 x 8) + (9 x 9) = 56 + 81 = 137 (5 x 6) + (7 x 8) = 30 + 56 = 86
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