Question
If 3792 = 39 and 7242 = 22, then 2958 =
?Solution
(3 × 7) + (9 × 2) = 21 + 18 = 39 (7 × 2) + (4 × 2) = 14 + 8 = 22 Similarly, (2 × 9) + (5 × 8) = 18 + 40 = 58
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