There are ______ perfect squares less than 100.
6
7
8
9
There are 9 perfect squares less than 100.
These perfect squares are 1, 4, 9, 16, 25, 36, 49, 64, 81.
How many numbers are there less than 100 that cannot be written as a multiple of a perfect square greater than 1?
There is/are ___ perfect square/squares between 50 and 70.