I need a two digit number which after reversi

Need to complete

42

To find a two-digit number that remains the same after reversing its digits, we can start by listing all the two-digit numbers and checking which ones satisfy this condition.

Let's start by listing all the two-digit numbers:
10, 11, 12, ..., 97, 98, 99

Now, let's check each number by reversing its digits:

For 10, reversing the digits gives 01, which is not a two-digit number.
For 11, reversing the digits gives 11. This is a match!
For 12, reversing the digits gives 21, which is a different number.
For 13, reversing the digits gives 31, which is different.
And so on...

As we continue checking each number, we find that the only two-digit number that remains the same after reversing its digits is 11.

So, the answer is 11.