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Mathematics 20 Online
OpenStudy (anonymous):

For the series find the first and last term....picture below! help

OpenStudy (anonymous):

OpenStudy (anonymous):

@ganeshie8 can you help please?

OpenStudy (cp9454):

\[\frac{ n(n+1) }{ 2 } + 4n\]

OpenStudy (cp9454):

put n=5 and u will get the answer i.e 35

OpenStudy (anonymous):

i got 35 but i dont know how to get the first term

OpenStudy (cp9454):

its 5

OpenStudy (cp9454):

general term is n+4

OpenStudy (anonymous):

so what would n equal if i am trying to find the last term it only gives me 8 and 9 as the two options (ie. 5,8 or 5,9)

OpenStudy (cp9454):

9

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