the lockers in the upstairs hall of a school are numbered consecutively from 2543 to 2592. what is the number of lockers in the hall?

a) 48 b) 49 c) 50 d) 51 e) 52

To find the number of lockers in the hall, we need to subtract the first locker number from the last locker number and add 1.

First locker number: 2543
Last locker number: 2592

Number of lockers = Last locker number - First locker number + 1
= 2592 - 2543 + 1
= 50

Therefore, there are 50 lockers in the hall.

The correct answer is c) 50.