In following questions, one term in number series is incorrect. Find out the incorrect number 3, 2, 8, 9, 13, 22, 18, 32, 23, 42
A
8
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B
9
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C
13
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D
22
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Solution
The correct option is A 9 The given sequence is a combination of two series : I. 3, 8, 13, 18, 23 and II 2, 9, 22, 32,42 The pattern in I is + 5 and the pattern in II is + 10. So, in II, 9 is wrong and must be replaced by (2 + 10) i.e. 12