100 is the only one, 10 times 10. 9 times 9 is 81 and 11 times 11 is 121
It is: 100
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100
It is 100 that is a perfect square between 50 and 150
81
It is: 81
The square root of any number between 64 and 81.The square root of any number between 64 and 81.The square root of any number between 64 and 81.The square root of any number between 64 and 81.