The nth odd number is 2n - 1
So 102nd odd number is 2*102 - 1 = 204 - 1 = 203
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odd
An odd number times an odd number is an odd number no matter which 2 odds you multiply.
If the last number is odd or even then the whole number is odd or even, in this case the last number is 3 which is an odd number, therefore the whole number is odd.
4225 is an odd number, as it ends in an odd number.
Odd