CBSE
Gujarat Board
Haryana Board
Class 10
Class 12
The 4th term of a G.P. is 16 and the 7th term is 128. Find the first term and common ratio of the series.
4th term of G. P. = 16
a r3 = 16
a x 23 = 16
a x 8 = 16
a = 2
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