Question

What is the sum of the 9th square number and the 1st square number?

Answer 1

sum is 82

Explanation:

`\sf \textsf{The 9th square number is }9^2 = 81`

`\sf \textsf{The 1st square number is }1^2 = 1.`

In order to find the sum of these two square numbers, simply add them together:

`\sf Sum = 81 + 1 = 82`

The sum of the 9th square number and the 1st square number is 82.