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sequence answer for 3, 12, 21, 30, 39

Guest Jun 3, 2015

Best Answer 

 #1
avatar+26329 
+10

Looks like a simple arithmetic progression with each term 9 more than the previous one. The n'th term could be written as:  3+9*(n-1)  (where n≥1)

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Alan  Jun 3, 2015
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4+0 Answers

 #1
avatar+26329 
+10
Best Answer

Looks like a simple arithmetic progression with each term 9 more than the previous one. The n'th term could be written as:  3+9*(n-1)  (where n≥1)

.

Alan  Jun 3, 2015
 #2
avatar+91038 
+5

The difference is 9 each time so part of it will be 9n

the first one is 9*1-6

the second is 9*2-6    etc

so

Tn=9n-6

( this is the same as Alan's answer)

Melody  Jun 3, 2015
 #3
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0

find the next three terms in the sequence 3,12,21,30

Guest Feb 21, 2017
 #4
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0

39,48,57  cool LIKE A BOSS!

Guest Feb 22, 2017

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