Originally Posted by

**xjx** can anyone shed any light on this problem. i don't know where to start!

'Many numbers can be expressed as the sum of two or more consecutive integars.

For example:

15=7+8

10=1+2+3+4

Can you say which numbers can be expressed this way and which numbers cannot be?

Can you prove your statements?'

So I understand that I have to go through the numbers and work out which are and aren't (e.g 1+2=3 so 3 works, then the next that works would be 2+3=5).

Can anyone see any particular ways I should go about doing this? Also what does it mean by can you prove your statements?

Any suggestions?