Question

In the following number series, a wrong number is given. Find out the wrong number.

142, 141, 137, 118, 112, 87

1. 112
2. 87
3. 137
4. 118
5. 142

Answer 1

Correct Answer - Option 4 : 118

Given:

142, 141, 137, 118, 112, 87

Calculation:

The series follows the following pattern,

142 - 1² = 141

141 - 2² = 137

137 - 3² = 128 ≠ 118

128 - 4² = 112

112 - 5² = 87

Since 128 will come in place of 118

∴ The required wrong number will be 118.