Question

Choose the correct option.

The total number of $4$-digit numbers are :

• A. $9999$
• B. $9899$
• C. $9900$
• D. $9000$

Answer 1

The correct option is D

$9000$

To get number of $4$-digit number we must know the smallest $4$-digit number is $=1000$

and largest $4$-digit number is $=$$9999$

Therefore, the total number of$4$-digit numbers $=(9999-1000)+1$

$=9000$.

Hence, Option D is correct answer.