Question

the 5 term of a gp is 4375 and the 2 term is 35 find (a)the 3 (b)the 6 (c)the sum of the first five terms

Answer 1

how

Answer 2

ar^4 = 4375
ar = 35
divide, and you get
r^3 = 125
r = 5

Now you know that
a = 35/5 = 7
and S5 = a(r^5-1)/(r-1)

Answer 3

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