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Question

Find out the wrong number from the following number series ?

5, 7, 16, 57, 244, 1245, 7506

A 244
B 57
C 7
D 5
Answer & Explanation
Option: [C]

The wrong number from the given series is 7. It is replaced by 6

5 x 1 + 12 = 6

6 x 2 + 22 = 16

16 x 3 + 32 = 57

57 x 4 + 42 = 244

244 x 5 + 52 = 1245

1245 x 6 + 62 = 7506

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