## GoldRush18 Group Title given the series 54+18+6+...determine the: i. general term ii. sum to infinity 2 years ago 2 years ago

1. mukushla

this is a GP ,,, u just need to find common ratio

2. GoldRush18

and wat is the common ratio

3. GoldRush18

dont knw how to do it

4. mukushla

in GP each term after the first is found by multiplying the previous one by a fixed non-zero number called the common ratio

5. mukushla

for example here$18=54\times\frac{1}{3}$$6=18\times\frac{1}{3}$...

6. mukushla

so the common ratio is $r=\frac{1}{3}$

7. GoldRush18

wat is the sum of infinity?

8. GoldRush18

ok thanx