In the following number series only one number is wrong. Find out the wrong number
4, 55, 576, 4209, 21280, 64083, 64204
Correct Answer: Option A
The pattern of the following series is:-
→ 4
→ 55 = 4 × 11 + 11 × 12
→ 576 = 55 × 9 + 9 × 32
→ 4207 = 576 × 7 + 7 × 52
Hence the wrong number of the series is 4209, it should be 4207.
→ 21280 = 4207 × 5 + 5 × 72
→ 64083 = 21280 × 3 + 3 × 92
→ 64204 = 64083 × 1 + 1 × 112
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