Multiple choice

Find the next term of the series : $7, 26, 63, 124, 215, 342, ?$

  1. $481$
  2. $391$
  3. $511$
  4. $421$
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C Correct answer
Explanation

The series follows the pattern n^3 - 1. 2^3-1=7, 3^3-1=26, 4^3-1=63, 5^3-1=124, 6^3-1=215, 7^3-1=342. The next term is 8^3-1 = 512-1 = 511.

AI explanation

The pattern of the series is n^3 - 1. The first term is 2^3 - 1 = 7, the second is 3^3 - 1 = 26, and the third is 4^3 - 1 = 63. The sixth term is 7^3 - 1 = 342. The next term is 8^3 - 1, which is 512 - 1, equaling 511.

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