Which of the following can be used to illustrate that not all prime numbers are odd?

a. 1

b. 2

c. 3

d. 4

e. 5

1 is kind of in debate as to whether it is a prime number or not. But it's odd anyway

2 is an even number, and is a prime number because it can only be divided by 1 and itself

3 is a prime number, but it's also an odd number

4 is an even number, but it can be divided by 1, 2, and itself, meaning it isn't a prime number

5 is a prime number, but it's also an odd number

So the answer is b. 2

B. 2

the reason for this is because 2 is even, but it is also a prime number because 2 can't be divided evenly by a number.