Question

Which of the following number is a perfect square? 62, 78, 121, 101​

Answer 1

Answer:-

121 is the right answer.

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Answer 2

Answer:

Is 62 a perfect square root? 62 is not a perfect square. 62 is a natural number, but since there is no other natural number that can be squared to result in the number 62, it is NOT a perfect square

Informally: When you multiply an integer (a “whole” number, positive, negative or zero) times itself, the resulting product is called a square number, or a perfect square or simply “a square.” So, 0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, and so on, are all square numbers.

78 is a number that is not a perfect square, meaning it does not have a natural number as its square root. Also, its square root cannot be expressed as a fraction of the form p/q which tells us that the square root of 78 is an irrational number.

Since 101 is not a perfect square, and therefore it is an irrational number.