Asked by nengi
what is the solution ,find the sum of the first five terms of the g.p 2,6,18
Answers
Answered by
Steve
just use your formula. Here, you clearly have
a=2
r=3
S5 = a(r^5-1)/(r-1) = 2(3^5-1)/(3-1) = 242
a=2
r=3
S5 = a(r^5-1)/(r-1) = 2(3^5-1)/(3-1) = 242
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