183=365/2 rounded up
To find the number of odd numbers in a set starting with 1, simply divide by 2 and round up. (Likewise, to find the number of even numbers, divide by 2 and round down.)
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There are 19 numbers between zero and 365 that have an odd number of factors.
183
All of the odd numbers.
There are five odd numbers on an odd number cube?
Every odd number. Multiplying two even numbers gives an even number. Multiplying an odd and an even number gives an even number. Multiplying two odd numbers gives an odd number.