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Mathematics 18 Online
OpenStudy (mathmath333):

the sequence is 1,3,6,10,15..... give the formula for rth term

OpenStudy (kobeni-chan):

rth?

OpenStudy (mathmale):

Ask yourself: Is this an arithmetic sequence or a geometric sequence?

OpenStudy (mathmale):

Answer on paper or here on OpenStudy: How do we get the 2nd term from the first? the 3rd from the second? the 4th from the third? You should see a pattern emerging.

OpenStudy (mathmath333):

none of AP or GPbut the common differnce rises as 2,3,4,5 .....

OpenStudy (mathmath333):

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