u can have 81,121,49,9,25,169 .....
if u multiply any odd number by itself it's going to give an odd number and still be a square
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The square of any odd number is also an odd number for reasons that should be obvious.
121 is an odd number and it is also a square number because 11*11 = 121
Any odd number multiply with itself, or any other odd number results in odd square number.
Half of all square numbers are odd. They are the ones which are the square of an odd number.
All square numbers have an odd number of factors.