If the 4th and 7th term of Geometric Progression are 54 and 1458 respectively,
find the Geometric Progression.
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Answer:
Geometric Progression = 2,6,18,54,......
Step-by-step explanation:
Given : Fourth term = 54 and Seventh term = 1458
To find : Geometric Progression
Solution :
Given 4th term = 54
Formula=
So here n is 4
= 54 ----------------(i)
Given 7th term = 1458
Formula =
so here n is 7
= 1456 -----------(ii)
Now equation (ii) ÷ (i)
≅ 27
Therefore
r = 3
Substituting r = 3 in (i)
a =
Therefore a = 2
Hence first term of Geometric progression is 2
Geometric progression's general form is
Therefore GP =
= 2,6,18,54, ........
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