Which of the following is a composite number?
19
23
43
55
Odd numbers leave ____________ as remainder when divisible by 2.
0
1
2
None of these
_________ is neither a prime nor a composite number
3
5
Numbers that have more than two factors are called _________ numbers.
Even
Odd
Prime
Composite
Numbers that have only two factors are called ________ numbers.
13 is a _________ number
When two numbers have only 1 as their common factor, they are called ________ numbers.
Coprime
The prime numbers between 10 and 20 are
11, 15, 17, 19
11, 13, 17, 19
11, 16, 17, 19
11, 13, 19
Of the following, twin prime numbers are ____________
13, 17
19, 21
23, 25
17, 19
Which of the following is a prime number
21
29
33
45
