9, 16, and 25 are square numbers.
The 1st 3 square numbers are 1 (1x1), 4 (2x2) and 9 (3x3)
There are no three consecutive numbers that are squares.Otherwise, there are an infinite sets of squares of three consecutive numbers: for example, {1,4,9}, or {4,9,16} or {576, 625, 676}
One hundred is the least three-digit square number. It is formed by 102.
100 + 49 + 1
36 details: the numbers are 1,2,3 the squares 1, 4, 9 the produc 1 x 4 x 9 = 36
Learn About Square Numbers
How to Check if a Number is Square
How to Calculate Squares of Whole Numbers
How to Use a Number Line to Find Square Roots