Question

Which of the following is a value are perfect square

Check all that apply
1
2
55
81
121

Answer 1

1, 81, and 121 are perfect squares.

1x1=1, so it is technically a perfect square. 81 is a perfect square because 9 can be multiplied by 9 to get 81. 121 is a perfect square for the same reason- 11 can be multiplied by itself to get 121

Answer 2

1, 81, and 121 are correct

Explanation:

they are the only ones that do not have a decimal when squared

1=1

81=9

121=11