9, 15, 21, 25, 27
None. All counting numbers are even or odd.
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.)
The even counting numbers less than 16 are 2, 4, 6, 8, 10, 12, and 14. These numbers are all divisible by 2 and fall within the range of counting numbers up to 15.
There are 15 prime numbers and 34 composite numbers because 1 is not considered to be a prime or composite number
The natural numbers are the counting numbers. Therefore, the natural numbers less than 31 are the numbers from 1 to 30.
None of them. All counting numbers are either odd or even.
None. All counting numbers are even or odd.
1 and it is 2
They are 4, 6, 8, 9, 10, 12 and 14.
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.)
14 of them.
15 and 9 are both odd, composite numbers less than 20.
composite numbers are less than 12: 4, 6, 8, 9, 10
The sum of the composite numbers that are less than 8 is: 4+6 = 10
9 and 15 are the only two odd composite numbers less than twenty.
The even counting numbers less than 16 are 2, 4, 6, 8, 10, 12, and 14. These numbers are all divisible by 2 and fall within the range of counting numbers up to 15.
1,2,3,4,5,6,7,8