Question 256059: which pattern is not linear a. 1,6,11,16,21,...
b. -1,7,15,23,31,...
c. 1,21,31,41,...
d. 1,3,9,27,81,
Answer by drk(1908)   (Show Source):
You can put this solution on YOUR website! a. 1,6,11,16,21,...
linear +5 every time
b. -1,7,15,23,31,...
linear +8 every time
c. 1,21,31,41,...
I think the first term should be 11 and not 1.
Now it is linear: +10 every time
d. 1,3,9,27,81,
NOT LINEAR: x3 every time
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