Question

The sum of 5 consecutive integers is 265. What is the fifth number in this sequence?

Answer 1

5 consecutive intergers means intergers that come one after another (1,2,3 or 56,57,58)

So you know that for 5 of those numbers to add up to 256 they all have to be around 256 / 5. 

Find an integer close to that, and start trying different consecutive numbers until you get the 265. Then you'll know the 5th number