What should come in place of ‘?’ in the given series?
45 ? 63 81 105 135
- AOption (a)
54
- BOption (b)
52
- COption (c)
51
- DOption (d)
53
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Correct answer
51
Why this answer is correct
The logic follows here,
Logic: The differences are increasing by 6 in each step.
- 45 + 6 = 51
- 51 + 12 = 63
- 63 + 18 = 81
- 81 + 24 = 105
- 105 + 30 = 135
The missing number in the series is 51.
Hence, the correct answer is "option 3."