Question

How many $4$ digit numbers can be formed with digits $1,2,3,4,5$ when digit may be repeated?

• A. $125$
• B. $625$
• C. $1024$
• D. None of these

Answer 1

The correct option is B $625$

5*5*5*5=625

where each of the 5s represent the choices of digits (at each place)to form the number.