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Question
Find out the wrong term: 2, 5, 10, 17, 26, 37, 50, 64
Options:
A .  17
B .  26
C .  37
D .  64
Answer: Option D
The term of the series are (12 + 1)(22 + 1)(32 + 1)(42 + 1)(52 + 1)(62 + 1)(72 + 1),..............So, 64 is wrong and must be replaced by (82 + 1) i.e., 65

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