Shoutbox

Well Daryl's answer is right but I got the B section differently (although a little more confusing.)

My result was:
           n= [(n-1)-(n-2)+6] + (n-1)

eg.
In this example I will use 108 as n, therefore (n-1) = 75 and (n-2) is 48
We want to calculate n so i will write the equation as
             n= (75-48+6)+75
therefore n=108

I know my method takes more effort to reach the same answer that Daryl got but depending on the wording of the question, you may not be allowed to put the nth term on each side as is done in Daryls...
Hope this helps

quote:

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Originally posted by Dempsy
well its n - (n-1)=6

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It's actually (n-1)-(n-2)=6