How many numbers are there between 1and100 which have exactly three factors?
There are 8 numbers between 1and100 which have exactly three factors, which are 4,9,16,25,36,49,64,81 (excluding 100, as it is asking between 1and100)
Which are the numbers between 1 and 100 that have exactly three factors?
From 1and100, list the numbers that have exactly three factors?
How many numbers are there having exactly one factor?