9 and 16
The square numbers between 1 and 20 are 1,4,9 and 16.
All whole numbers between 1 and 400 (=20 square).
There are (not counting 1) three square numbers between 1 and 20.
4
The even square numbers between 20 and 120 are 36, 64, and 100. These correspond to the squares of the even integers 6, 8, and 10, respectively.
4 and 5
The square numbers between 1 and 20 are 1,4,9 and 16.
All whole numbers between 1 and 400 (=20 square).
23, 29
There are an infinite number of rational numbers between any two numbers.
25
There are (not counting 1) three square numbers between 1 and 20.
There are 31 perfect square numbers between 1 and 1000 (including 1).
4
The even square numbers between 20 and 120 are 36, 64, and 100. These correspond to the squares of the even integers 6, 8, and 10, respectively.
The two consecutive whole numbers that 20 lies between are 19 and 21. This can be determined by recognizing that 20 is the average of 19 and 21. In other words, (19 + 21) / 2 = 20. This demonstrates that 20 is exactly halfway between 19 and 21 in the number line.
1, 4, 9, 16