Which of the following is co-prime numbers
6, 9
8, 12
4, 9
10, 15
_________ is neither a prime nor a composite number
1
2
3
5
If two prime numbers have only one number between them, then they are called
Prime numbers
Composite numbers
Twin prime numbers
Even numbers
Odd numbers leave ____________ as remainder when divisible by 2.
0
None of these
Which of the following is a prime number
21
29
33
45
13 is a _________ number
Even
Prime
Composite
All numbers ending in 1, 3, 5, 7 or 9 are _________ numbers.
Odd
The prime numbers between 10 and 20 are
11, 15, 17, 19
11, 13, 17, 19
11, 16, 17, 19
11, 13, 19
Numbers that have only two factors are called ________ numbers.
Even prime number is
4
