5 of them.
The squares of integers are known as perfect squares.
No. Convention defines perfect squares as squares of positive integers.
perfect squares
Integers which are the squares of integers are called perfect squares or square numbers. Perfect squares less than 101 are 1, 4, 9, 16, 25, 36, 49, 64, 81 and 100.
Infinitely many, since every positive number is a square of some other number. However, there are 21 perfect squares (SQUARES OF INTEGERS). From 112 to 312, inclusive.
The only squares of perfect squares in that range are 1, 16, and 81.
There are 8: the squares of 2 to 9, inclusive.
750
500
sqrt(2000) = 44.7sqrt(20000) = 141.4So the perfect squares between 2000 and 20000 are the squares of 45 to 141 (inclusive)ie there are 97 perfect squares in the interval.
perfect squares
Large perfect squares.