Multiple choice

In the following question, select the missing number from the given series. $35, 50, 63, 82, ?, 122$

  1. 101

  2. 99

  3. 100

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The pattern involves squares: 35=36-1 (6²-1), 50=49+1 (7²+1), 63=64-1 (8²-1), 82=81+1 (9²+1). So 99=100-1 (10²-1), and 122=121+1 (11²+1). The answer is 99, which follows the alternating -1/+1 pattern around consecutive perfect squares.

Keep practicing — related questions