find the nth term of G.P. : 625, 125, 25, 5, 1, 1/5, ...
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ar^(n-1)
r=125/625=1/5
a=625
nth term = 625×(1/5)^(n-1)
r=125/625=1/5
a=625
nth term = 625×(1/5)^(n-1)
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