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Question 605754: how can i find the 10th sequence for the sequences 1+3+6+10+...
Answer by mathie123(224)   (Show Source):
You can put this solution on YOUR website! Look for the pattern and then since the 10th term is not far into the sequence, we can just evaluate it:
So we start with 1 and then added 2 to get the next number (3) and then from there we added 3 to get the next number (6) and from there....
Do you see a pattern?
(HINT:
Let's say I wanted to find the 5th term:
I have
1+2+3+4+5=15)
Google it: Gauss determined how to find the 100th term in the sequence using a very neat formula-- he added the first and last terms and then the second and second last... and noticed something... this is another way to do this question
I will let you do the rest, hopefully this helps get you on the right track
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