Question

Which of the following is a perfect square =1057,625,64000,890

Answer 1

Answer:

625 which is the square root 25.

Step-by-step explanation:

What is a perfect square?

A perfect square is a number that makes up an exact square number.

>> No square number ends in 2, 3, 7 or 8.

For example :

=> 2² = 4 , 3² = 9 , 4² = 16 , 5² = 25 , 6² = 36

>> The inverse of square number is square roots.

ie, √9 = 3²

>> The number of zeros at the end of a perfect square is always even.

For example:-

=> 10² = 100, 100² = 10,000 , 1000² = 10,00,000

>> Squares of odd numbers are always odd and square roots of even numbers are always even.

For example:

=> 2 × 2 = 2² = 4 , 4 × 4 = 4² = 16 , 6 × 6 = 36 , 8 × 8 = 8² = 16

=> 3 × 3 = 3² = 9 , 5 × 5 = 5² = 25 , 7 × 7 = 7² = 49 , 9 × 9 = 9² = 81

Answer 2

Answer:

I hope it can help you...

follow me..