1, 16, 81, 256, 625
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The smallest 5-digit integer perfect square is 10,000 = (100)2The largest 5-digit integer perfect square is 99,856 = (316)2So we want to know how many numbers that is, from 100 to 316 inclusive.It's 316 minus the first 99 = 217 of them.
The only two are 9 and 16.
No, it would be 2.23606797749978969640917366873127623544061835961152572427089. 4, 9, 16, etc are perfect squares. Ex: 2 x 2 = 4 3 x 3 = 9
5
√65 .The factors of 65 are 13 & 5, neither of which are perfect squares.