Which of the following is co-prime numbers
6, 9
8, 12
4, 9
10, 15
Numbers that have more than two factors are called _________ numbers.
Even
Odd
Prime
Composite
Odd numbers leave ____________ as remainder when divisible by 2.
0
1
2
None of these
All numbers ending in 1, 3, 5, 7 or 9 are _________ numbers
Which of the following is a prime number?
21
29
33
45
All numbers ending in 0, 2, 4, 6 or 8 are ____________ numbers
Number of prime numbers between 20 and 30 is
3
4
_________ is neither a prime nor a composite number
5
28 is a _________ number
If two prime numbers have only one number between them, then they are called
Prime numbers
Composite numbers
Twin prime numbers
Even numbers