Question
40 42 87 266
? 5366 What will come in place of the question mark (?) in the following series?Solution
40 x 1 + 2 = 42 42 x 2 + 3 = 87 87 x 3 + 5 = 266 266 x 4 + 7 = 1071 1071 x 5 + 11 = 5366
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