Question

A letter Lock consists of three rings each marked with 5 different letters. Number of maximum attempts to open the lock is:

• A. $124$
• B. $125$
• C. $120$
• D. $75$

Answer 1

The correct option is B $125$

There are 5 different letters marked on each rings and there are total three rings

So number of maximum number of attempts to open the lock will be

$5\times 5\times 5=125$