How many five-digit integers are perfect squares?

1 answer

The smallest 5-digit number is 10000 and its square-root is 100.

The largest 5-digit number is 99999 and its square-root is 316.23.

Thus the square of all integers between 100 and 316 inclusively will yield a perfect square between 10000 and 99999.

How many integers are there?