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Select the number that will come next in the following series.

141, 145, 154, 179, 228, 349, ?


1. 618
2. 620
3. 520
4. 518

1 Answer

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Correct Answer - Option 4 : 518

The logic is as:

Square of prime numbers are added to the previous one to get the next number in the series.

141 + 22 = 145

145 + 32 = 154

154 + 52 = 179

179 + 72 = 228

228 + 112 = 349

349 + 132 = 518

Hence, the missing number is 518.

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