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Question
Direction To Solve : Find out the wrong term in the given Number Series.
5, 10, 40, 80, 320, 550, 2560
Options:
A .  80
B .  320
C .  550
D .  2560
E .  None of these
Answer: Option C
 -   The sequence is x2, x4, x2, x4, ….. so 550 is wrong and must be replaced by (320 x 2) = 640.

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