+0

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

0
1785
4

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

Guest Jun 3, 2015

#1
+26640
+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)

.

Alan  Jun 3, 2015
Sort:

#1
+26640
+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)

.

Alan  Jun 3, 2015
#2
+92221
+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
0

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

Guest Feb 21, 2017
#4
0

39,48,57   LIKE A BOSS!

Guest Feb 22, 2017

### 22 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details