B.Ed (CHANDIGARH) 2018 Entrance Exam With Answers

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61.

Find the next number in series 512, 729, 1000, ?

A: 1728
B: 1100
C: 1331
D: 1231

The answer is: C

Explanation

The next number in the series is C) 1331.

The given series represents the cubes of consecutive natural numbers:

512 = 8^3
729 = 9^3
1000 = 10^3
Therefore, the next number in the series is 1331, which is equal to 11^3.