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In a G.P. of positive terms if any terms...

In a G.P. of positive terms if any terms is equal to the sum of next tow terms, find the common ratio of the G.P.

A

`-1`

B

`-3`

C

`-3`

D

`-1//2`

Text Solution

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The correct Answer is:
C
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OBJECTIVE RD SHARMA ENGLISH-SEQUENCES AND SERIES-Chapter Test
  1. If three numbers are in H.P., then the numbers obtained by subtracting...

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  2. The first three of four given numbers are in G.P. and their last three...

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  3. In a G.P. of positive terms if any terms is equal to the sum of next ...

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  4. If a,b,c are in H.P and ab+bc+ca=15 then ca=

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  5. If sum(r=1)^(oo)(1)/((2r-1)^(2))=(pi^(2))/(8), then sum(r=1)^(oo) (1)/...

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  6. It is given that 1/1^4 + 1/2^4 +1/3^4 … to oo= pi^4/90 , then 1/1^4...

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  7. The minimum number of terms from the beginning of the series 20+22(2)/...

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  8. The sum of the series 1-3+5-7+9-11+ . . . . To n terms is

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  9. If three positive unequal numbers a, b, c are in H.P., then

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  10. If the fifth term of a G.P. is 2, then write the product of its 9 t...

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  11. 1^3-2^3+3^3-4^3+........+9^3 is equal to

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  12. The sum of infinite number of terms in G.P. is 20 and the sum of their...

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  13. If 1, log (9) (3^(1 - x) + 2) and log(3) (4.3^(x) -1) are A.P. then...

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  14. Two sequences lta(n)gtandltb(n)gt are defined by a(n)=log((5^(n+1))/...

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  15. The sum of the series (1)/(sqrt(1)+sqrt(2))+(1)/(sqrt(2)+sqrt(3))+(1...

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  16. Natural numbers are written as 1, (2,3), (4,5,6).. Show that the sum...

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  17. If the first term of an A.P. is 2 and common difference is 4, then ...

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  18. If 1+(1+2)/2+(1+2+3)/3+ddotto\ n terms is Sdot Then, S is equal to (n(...

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  19. The sum of 10 terms of the series sqrt(2)+sqrt(6)+sqrt(18)+ddoti s\ ...

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  20. The (m+n)th and (m-n)th terms of a GP are p and q, respectively. Then,...

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