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If 1/(b-a)+1/(b-c)=1/a+1/c , then a,b,c ...

If `1/(b-a)+1/(b-c)=1/a+1/c` , then a,b,c are in (A) AP (B) GP (C) HP (D) NONE

A

A.P.

B

GP.

C

H.P.

D

In G.P.and H.P both

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The correct Answer is:
C
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DISHA PUBLICATION-SEQUENCES AND SERIES -EXERCISE -1 : Concept Builder
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  10. If A and G be the AM and GM between two positive no.'s ; then the numb...

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  11. Consider the sequence of numbers 121, 12321, 1234321,... Each term in ...

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  16. the sum3/1^2+5/(1^2+2^2)+7/(1^2+2^2+3^2)+....... upto 11 terms

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  17. The sum of the infinite series (1)/(2) ((1)/(3) + (1)/(4)) - (1)/(4)...

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  18. The sum of the series : (2)^(2) + 2(4)^(2) + 3(6)^(2)+.... Upon 10 ter...

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  19. Let H(n)=1+(1)/(2)+(1)/(3)+ . . . . .+(1)/(n), then the sum to n terms...

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  20. For a positive integer n let a(n)=1+1/2+1/3+1/4+1/((2^n)-1)dot Then a(...

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