Question

In the number series only one number is wrong. Find out the wrong number.
12 11 24 72 280 1395 8376

• A. 12
• B. 72
• C. 24
• D. 1395
• E. None of these

Answer 1

The Correct Option is B

The series follows a similar pattern that is,

12 × 1 − 1 = 11

11 × 2 + 2= 24

24 × 3 - 3 = 69

69 × 4 + 4 = 280

280 × 5 - 5 = 1395

1395 × 6 + 6 = 8376

The Error Term is 72

The Term which will Replace it will be 69

The correct option is (B): 72