Multiple choice

In the following number series one number is given wrong find the number? 41 162 81 130 110 121

  1. 41

  2. 110

  3. 81

  4. 162

  5. 121

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The series follows the pattern of alternately adding and subtracting squares of consecutive odd numbers starting from 11: 41 + 11^2 = 162, 162 - 9^2 = 81, 81 + 7^2 = 130, 130 - 5^2 = 105, 105 + 3^2 = 114. The number 110 breaks this pattern as it should be 105 (130 - 5^2). The alternating addition and subtraction of decreasing odd squares creates the sequence.