In each of the following questions , one term is wrong. Find out the wrong term.
76, 89, 115, 167, 271, 489
A
115
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B
167
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C
271
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D
489
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Solution
The correct option is D 489 The difference of two successive terms is 13, 26, 52, 104, 208. In place of 489, it should have 479. Hence 489 is old man out.