Question

how many elements are in the set {x| x is an even prime number, x is less then 120

Answer 1

Do you know what a prime number is?

Answer 2

no

Answer 3

Then your first step would be to look up the definition of a prime number.

Answer 4

an integer that has no intergral factors but itself and 1

Answer 5

can be divided evenly only by itself and 1

Answer 6

Also, it must be greater than 1.

Answer 7

Do you know what even numbers are?

Answer 8

yes

Answer 9

What is the characteristic of even numbers?

Answer 10

hte are divisable by 2

Answer 11

So now, read your problem again. I bet you will know the answer.

Answer 12

1only 1 element in this set?

Answer 13

Yes. Very good. Because the number must be even and it must have only 1 and itself as factors. So the only candidate is 2 and you should tuck it away in your brain that 2 is the only prime number that is even.

Answer 14

thanks

Answer 15

yw