Among the whole numbers, these are:
A prime number can't be divided, then it's not a square
1, 4, 9, 16, 25, 36, 49, 64, 81, 100
101
101
No square number is a prime number, since it has the number you squared as a factor. There are several square numbers less than 100. Just calculate the squares of all numbers, starting with 1, until you reach or pass 100. Then stop.
10001
There are 10 square numbers
Both 25 and 4 are factors of 100 and are square numbers, 25 is 52 and 4 is 22. 100 and 1 are also factors of 100, and are also square numbers: 1 is 12 and 100 is 102.
There are nine square numbers including 1 below 100 (1x1...9x9). So, there are 99 - 9 'not square numbers' below 100 which is 90
all of the square numbers up to 100 are: 1, 4, 9, 16, 25, 36, 49, 64, 81 and 100
There are 10 square numbers from 1 to 100, so the median is the mean average of the middle two - the 5th and 6th square numbers = (25 + 36) ÷ 2 = 30.5
101
100 + 49 + 1
1, 4, 25, 100, 1000
Square numbers: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100
A prime number can't be divided, then it's not a square
1 and 64