Question
8, 9, 12, 18, ?,
43 In each of the following questions, a number series is given with one term missing. Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.Solution
8 + 1 = 9 9 + (1 + 2) = 12 12 + (1 + 2 + 3) = 18 18 + (1 + 2 + 3 + 4) = 28 28 + (1 + 2 + 3 + 4 + 5) = 43
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