43 is prime as the only factors of 43 are 1 and 43. The first square number is 1 because \(1 \times 1 = 1\). The second square number is 4 because \(2 \times 2 = 4\) The third square number is 9 ...

the first square picked is as likely to win as the final one. Once the grid is fully assigned, randomize the numbers 0-9 on the top and 0-9 on the left side. You can draw numbers out of a hat ...

Which is 9. So 9 is a square number. Here are some other examples of square numbers. Can you see how all these numbers can be arranged into a square? Which is 64. So 64 is a cube number.