Home
Class 12
MATHS
The first term of a G.P. is 3 and the co...

The first term of a G.P. is 3 and the common ratio is 2. Then the sum of first eight terms of the G.P. is

A

763

B

189

C

381

D

765

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

If the first term of a GP is 729 and 7th term is 64, then the sum of its first seven terms is

In an A.P. the difference between the last and the first terms is 632 and the commons difference is 4. Then the number of terms in the A.P. is

Suppose that a, ar, ar^2,ar^3,ar^4,ar^5 are the first 6 terms of a G.P Find the ratio of the sum of the first tree terms and the sum of first 6 terms

If 6th term of a GP is 2, then the product of first 11 terms of the GP is equal to

If 4th term of a GP is 32 whose common ratio is half of the first term, then the 15th term is

The first term of an infinite GP is 1 and each term is twice the sum of the succeeding terms, then the sum of the series is a)2 b) (5)/(2) c) (7)/(2) d) (3)/(2)

Suppose that a, ar , ar^2,ar^3,ar^4,ar^5 are the first 6 terms of a G.P If the ratio of the sum of first three terms and the sum of first 6 terms is 125:152 find the common ratio of the G.P

The first term of a G.P. is 1. The sum of the third term and fifth term is 90. Find the C.R of the G.P

Suppose x and y are real numbers such that -1lt xlt ylt 1 . Let G be the sum of the geometric series whose first term is x and whose common ratio is y, and let G' be the sum of the geometric series whose first term is y and common ratio is x. If G=Gʻ, then the value of (x +y)

The first, second and middle terms of an A.P. are a, b, c, respectively. Then the sum of all terms of the A.P. is