Multiple choice

In the following number series, two numbers are placed in parentheses. Study the series carefully and choose the correct option in relation to the series. 2, 5, 10, 17, (26), 37, 50, 65, (81), 101

  1. The numbers in both brackets are incorrect

  2. The number in the first bracket (from left) is correct and the second is false.

  3. The number in the first bracket (from the left) is incorrect and the second is correct.

  4. The numbers in both brackets are correct.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The series follows the pattern n² + 1: 2=1²+1, 5=2²+1, 10=3²+1, 17=4²+1, 26=5²+1, 37=6²+1, 50=7²+1, 65=8²+1, 82=9²+1, 101=10²+1. The first parenthesized number (26) fits this pattern. The second should be 82, not 81. So only the first is correct.

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