Question

the sum of 3 terms of gp is 7 and that of 6 terms is 63. find gp​

Answer 1

Answer:

r^2 = 567/63 = 9

r = ±3

Now you can find a, and

S6 = a(r^6-1)/(r-1)

 

Step-by-step explanation:

hope this helps

- by crankybirds30