Question

Which of the following numbers are not perfect squares? Give reasons. 7921​

Answer 1

Answer:

7921 is a perfect square....

Step-by-step explanation:

Because If any number is perfect square then they contain 0,1,4,5,6,9 at their ones place...

And here 7921 contain 1 at its ones place ...

so it is a perfect square..

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Answer 2

Step-by-step explanation:

7 and 2 are not a perfect because it doesn't end with 1,4,9,6,5