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Find the sum of 7 terms of the G.P. 3,6,...

Find the sum of 7 terms of the G.P. 3,6,12…

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Verified by Experts

Here, `a=3,n=7`
`r=2`
Therefore,
`S_n​=(a(r^n−1​))/(r-1)`
...
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RD SHARMA-GEOMETRIC PROGRESSIONS-Solved Examples And Exercises
  1. Find three numbers in G.P. whose product is 729 and the sum of their ...

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  2. The sum of three numbers in G.P. is 21 and the sum of their squares is...

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  3. Find the sum of 7 terms of the G.P. 3,6,12…

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  4. Find the sum of 7 terms of the sequence (1/5+2/(5^2)+3/(5^3)),\ (1/(5^...

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  5. Find the sum of the series 2+6+18++4374

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  6. The sum of first three terms of a G.P is 16 and the sum of the next th...

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  7. Find a G.P. for which sum of the first two terms is -" "4 and the f...

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  8. The sum of some terms of a G.P. is 315 whose first term and the common...

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  9. Find the sum of the products of the corresponding terms of the sequ...

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  10. if S is the sum , P the product and R the sum of reciprocals of n term...

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  11. A person writes a letter to four of his friends. He asks each one of ...

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  12. If f is a function satisfying f(x+y)=f(x)xxf(y) for all x ,y in N suc...

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  13. Find the natural number a for which sum(k=1)^nf(a+k)=16(2^n-1), where...

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  14. Find the sum of the following geometric progression: 2,6,18… to 7 term...

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  15. Find the sum of the following geometric progression: 1,3,9,27,… to 8 ...

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  16. Find the sum of the following geometric progression: 1,\ -1//2,\ 1//4,...

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  17. Find the sum of the following geometric progression: (a^2-b^2),\ (a-b)...

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  18. Find the sum of the following geometric progression: 4,2,1,1//2, ........

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  19. Find the sum of the following geometric series: 0. 15+0. 015+0. 0015+ ...

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  20. Find the sum of the following geometric series: \ sqrt(2)-1/(sqrt(2))+...

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