11, 5, 20, 12, 40, 26, 74, 54

1.	11, 5, 20, 12, 40, 26, 74, 54
Answer» The given sequence is a combination of two series : I. 11, 20, 40, 74 and II. 5, 12, 26, 54 The correct pattern in I is + 9, + 18, + 36,..... So, 40 is wrong and must be replaced by (20 + 18) i.e. 38.

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