There are infinitely many of them. The square of every odd number will be an odd square number.
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No, all perfect square numbers are not even numbers. Eg. the square of 3 is 9. (32=9) To generalize the proof: If p is odd then p=2n+1 and p2=(2n+1)2=4n2+4n+1=2(2n2+2n)+1 So odd numbers have odd square
All the odd numbers between 1 and 2001.
The sum of all the odd numbers between 1 and 12000 is 36000000.
If the numbers that are squared are odd, then the squared number will be odd. For example: 32 = 9 72 = 49 172 = 289 132 = 169 212 = 441 And all even numbers that are squared result in an even number. For example: 22 = 4 82 = 64 102 = 100 282 = 784 302 = 900
The sum of the first 500 odd numbers is 250,000.