Find the wrong term in the given series: 125, 126, 124, 127, 123, 129

A126

B124

C123

D129 ✓ Correct

Correct answer: (D) 129

Explanation

The wrong term is 129.

The rule adds and subtracts a growing count: +1, -2, +3, -4, +5.

125 + 1 = 126, 126 - 2 = 124, 124 + 3 = 127, 127 - 4 = 123.

The next step is 123 + 5 = 128.

The series shows 129, which breaks the pattern.

So 129 should be 128.

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