# How many people are there in the row?

In a row, A is 12^{th} from the left and B is 14^{th} from the right. They both interchanged their positions. Now, A becomes 17^{th} from the left. How many people are there in the row?

- 31
- 27
- 30
- 29

**Answer: (3) 30**

**Explanation:-
**A is 12th from the left and B is 14th from the right.

Then,

1 2 3 4 5 6 7 8 9 10 11

**A12**

**14 (B)**13 12 11 10 9 8 7 6 5 4 3 2 1

They both interchanged their positions. Now, A becomes 17th from the left .

1 2 3 4 5 6 7 8 9 10 11 **(B) ****12 **13 14 15 16 **17(****A)14 ** 13 12 11 10 9 8 7 6 5 4 3 2 1

Then, the total number of people in the row = 17 + 14 – 1

= 31 – 1

= 30

Hence, the correct answer is option (3) 30.