Palindromic numbers

A palindromic number is a number that remains the same even when the digits are reversed; like 13431.

Fraction

The word fraction comes from the Latin word fractus which means broken.

111,111,111 x 111,111,111

If you multiply 111,111,111 x 111,111,111, you get 12,345,678,987,654,321. You will notice in the answer that the numbers go from 1 to 9 and then go backward from 9 to 1.

Millions of seconds

There are 86,400 seconds every 24 hours. Every 30 days that adds up to 2,592,000 seconds that have gone by.

Numbers 1-10 and 1-20

The numbers 1-10 add up to 55. The numbers 1-20 add up to 210.