In a G.P the 3rd term is 12 and 5th term is 48. find 9th term
frnds answer it ......❣️
Answers
Answered by
2
Step-by-step explanation:
Consider a G.P series where first term is 'a' and common difference is 'r'
Let the series be a, ar,ar^2,ar^3 and so on..
3rd term=12=ar^2
6th term=96=ar^5
Dividing ar^5/ar^2, we get r^3=8=2^3
Therefore r=2
And, a=3
The terms are: 3,6,12,24,48,96,192,384,768…. and so on
For finding the sum of the terms we use the formula, s=a*(1-r^n)/(1-r), where n is the number of terms
Therefore, s=3*(1–2^9)/(1–2)=1533
Answered by
1
Answer:
hi friend what r u doing?
Similar questions
Biology,
4 months ago
Social Sciences,
4 months ago
Math,
9 months ago
Biology,
9 months ago
Social Sciences,
1 year ago
English,
1 year ago