Question
Find the wrong number in the given number series.
/> 11, 20, 38, 78, 154, 310Solution
ATQ,
9 * 2 + 2 = 20
20 * 2 – 2 = 38
38 * 2 + 2 = 78
78 * 2 – 2 = 154
154 * 2 + 2 = 310
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