Three numbers p, q and r are all prime numbers less than 50 with the property that . How many values of r are possible?

I would think this is 0 because prime numbers have to be odd and odd + odd always equals an even number. But the answer is not 0

Results 1 to 7 of 7

- July 28th 2009, 11:52 PM #1

- Joined
- Jul 2009
- From
- Melbourne
- Posts
- 274
- Thanks
- 4

## Question

Three numbers p, q and r are all prime numbers less than 50 with the property that . How many values of r are possible?

I would think this is 0 because prime numbers have to be odd and odd + odd always equals an even number. But the answer is not 0

- July 29th 2009, 12:21 AM #2

- July 29th 2009, 12:25 AM #3

- Joined
- Jul 2009
- From
- Melbourne
- Posts
- 274
- Thanks
- 4

- July 29th 2009, 12:28 AM #4

- Joined
- Jul 2009
- From
- Melbourne
- Posts
- 274
- Thanks
- 4

- July 29th 2009, 12:35 AM #5

- July 29th 2009, 12:36 AM #6

- Joined
- Jul 2009
- Posts
- 397

- July 29th 2009, 01:11 AM #7

- Joined
- Jul 2009
- From
- Melbourne
- Posts
- 274
- Thanks
- 4