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May 27, 2019 in Other

Q:

Geometric Progression: x, xr, xr3, xr4, --- are said to be in geometric progression. Here, a is first term and r is common ratio. 

a) nth term = xr (n -1)

b) Sum of n terms = x (1 – rn) , here r < 1
(1 – r)
c) Sum of n terms = x (rn – 1) , here r > 1
(r – 1)
 

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