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Select the number from among the given options that can replace the question mark (?) in the following series.

126, 217, 344, ?


1. 513
2. 470
3. 614
4. 688

1 Answer

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Best answer
Correct Answer - Option 1 : 513

The pattern followed in this series is:

53 + 1 = 125 + 1 = 126

63 + 1 = 216 + 1 = 217

73 + 1 = 343 + 1 = 344

83 + 1 = 512 + 1 = 513

Hence, "513" will complete the series.

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