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The value of x for which 1/(1+sqrtx),1/...

The value of x for which `1/(1+sqrtx),1/(1-x),1/(1-sqrtx)` are in AP lie in

A

(0,1)

B

`(1,infty)`

C

`(0,infty)`

D

none of these

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PATHFINDER-PROGRESSION AND SERIES -QUESTION BANK
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  2. Sum of infinite terms of series 3+5. 1/4+7. 1/4^2+..... is

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  3. The value of x for which 1/(1+sqrtx),1/(1-x),1/(1-sqrtx) are in AP li...

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  4. If the non-zero numbers a,b,c are in AP and tan^-1a,tan^-1b,tan^-1c ar...

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  5. If a,b,c,d are distinct positive numbers in AP, then

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  6. If sum(r=1)^nr(r+1)(2r+3)=an^4+bn^3+cn^2+dn+e, then

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  7. The pth term Tp of HP is q(p+q) and qth term Tq is p(p+q) when pgt1,qg...

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  8. For a positive integer n let a(n)=1+1/2+1/3+1/4+.......+1/((2^n)-1) th...

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  9. A geometric progression of real number is such that the sum of its fir...

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  10. If the first and the (2n-1)^th term of an A.P,G.P anf H.P are equal an...

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  11. If a,b,c be in H.P prove that (1/a+1/b-1/c)(1/b+1/c-1/a)=4/(ac)-3/b^2

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  12. Which one of the following statements is correct ?

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  17. Which one of the following statements is correct ?

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  18. Match List-I with List-II

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  19. The roots of equation x^2+2(a-3)x+9=0 lie between -6 and 1 and 2 , h1,...

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  20. If a,b,c ,d are distinct integer in AP such that d=a^2+b^2+c^2, then a...

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