Q: Is 21 a Palindrome?

How is 21 not a palindrome number?

A palindromic number is number that remains the same when its digits are reversed.

Here's how to check if a number is a palindrome:

Step 1

Take the original number and reverse it.

Here is the original number color coded:

21

Now we reverse it like this:

12

Notice the colors are going in the opposite direction now

Step 2

Compare the two numbers. If they are exactly the same then the number is a palindrome.

Is 21 = 12?

Answer:

NO, so that means the number 21 is not a palindrome!

More Examples

Here are more examples of potential palindrome numbers in sequence: