None. All counting numbers are even or odd.
1, 3, 5, 7, 9 counting by twos to 99 are the odd numbers. 2, 4, 6, 8, 10 counting by twos to 100 are the even numbers.
Any product of two or more odd numbers that are larger than 1. For example, 33 = 3*11 is odd and composite.
All numbers are either odd or even, none are both, so less than 30 there are 29 counting numbers that are either odd or even but not both. (Assuming you mean starting to count with 1.)
4999 (not counting 1).
The sum of the first 500 odd counting numbers is 250,000.
No.
None of them. All counting numbers are either odd or even.
None. All counting numbers are even or odd.
1, 3, 5, 7, 9 counting by twos to 99 are the odd numbers. 2, 4, 6, 8, 10 counting by twos to 100 are the even numbers.
Any product of two or more odd numbers that are larger than 1. For example, 33 = 3*11 is odd and composite.
All numbers are either odd or even, none are both, so less than 30 there are 29 counting numbers that are either odd or even but not both. (Assuming you mean starting to count with 1.)
4999 (not counting 1).
irrational numbers odd numbers even numbers whole numbers prime numbers composite numbers counting numbers
1, 2, 3, and 5
16
Their sum is 10000.