21 is an odd composite number
It is odd.
an odd number
There can be no number with an odd sum of 8 because 8 is not odd!
The sum of any four odd numbers will never be equal to an odd number.
21 is an odd composite number
It is odd.
An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. 21 is an odd number.
In mathematics, an even number is an integer that is divisible by 2 without leaving a remainder. In the case of 21, when divided by 2, there is a remainder of 1, indicating that it is not evenly divisible by 2. Therefore, 21 is classified as an odd number.
an odd number
There can be no number with an odd sum of 8 because 8 is not odd!
Yes
The sum of any four odd numbers will never be equal to an odd number.
21
15
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First odd number greater than 20 is 21 Last odd number less than 200 is 199 → number of odd numbers between 20 and 200 is (199 - 21) ÷ 2 + 1 = 90