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# VERY URGENT Maths Help Needed watch

1. How on earth do you find how many common terms are in a sequence, what these terms actually are and whether there are any common terms?

One of the questions I have is:
The nth terms of two sequences are 100-5n and n^2+1. How many numbers occur in both?
2. BUMP!
3. (Original post by momomomo123)
How on earth do you find how many common terms are in a sequence, what these terms actually are and whether there are any common terms?

One of the questions I have is:
The nth terms of two sequences are 100-5n and n^2+1. How many numbers occur in both?
There are not many positive terms for 100-5n

Why not just check each of them
4. (Original post by momomomo123)
How on earth do you find how many common terms are in a sequence, what these terms actually are and whether there are any common terms?

One of the questions I have is:
The nth terms of two sequences are 100-5n and n^2+1. How many numbers occur in both?
You could just list the terms of the two sequences.
e.g. 100,95,90,85,... and 2,5,10,17,.... and simply see which numbers occur in both.

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Updated: January 23, 2014
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