Question
Select the number that can replace the question mark (?)
in the following series. 17, 20, 15, 22, 13, ?Solution
Alternate series is going on in this question, in the first one it is getting (-2) and in the other one it is getting (+2) 17 - 2 = 15 - 2 = 13 20 + 2 = 22 + 2 = 24
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