Question

The number of $5$ digits palindrome numbers is

• A. $1000$
• B. $990$
• C. $900$
• D. $999$

Answer 1

The correct option is C $900$

Let $ABCBA$ is a $5$ digit Palindrome number
$\therefore A$ can be filled in $9$ ways (zero is being excluded as it will becomes 4 digits number)
and $B$ can be filled in $10$ ways
and $C$ can be filled in $10$ ways
$\therefore$total ways $=9\times 10\times 10=900$