Question

In each of the following questions , one term is wrong. Find out the wrong term.

825, 645, 354, 312, 915, 715

• A. 715
• B. 915
• C. 312
• D. 354

Answer 1

The correct option is A 715

The number in the unit place is the average of the other two. Hence 715 is the odd man out, because $\frac{7+1}{2}=4$, so it should be 4 in place of 5 i.e. it should be 714.