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IF 1+(1/2)+(1/3)+…….+(1/20)=k then what ...

IF `1+(1/2)+(1/3)+…….+(1/20)=k` then what is the value of `(1/4)+(1/6)+(1/8)+…..+(1/40)`?

A

`k//2`

B

2k

C

`(k-1)//2`

D

`(k+1)//2`

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CHAMPION PUBLICATION-2017 TIER-II PAPER(11)-EXERCISE
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  2. Which of the following statement(s) is/are TRUE? I. 3//71 < 5//...

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  3. IF 1+(1/2)+(1/3)+…….+(1/20)=k then what is the value of (1/4)+(1/6)+(1...

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  5. If x + y = 10 and xy = 4 then what is the value of ( x^(4) + y^(4) ...

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  8. If a=(sqrt3+ sqrt2)/(sqrt3- sqrt2) and b=(sqrt3- sqrt2)/(sqrt3+sqrt2),...

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  9. If the difference between the roots of the equation Ax^(2) - B x +...

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  10. alpha and beta are the roots quadratic equation . If alpha + beta...

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  11. If a and b are the roots of the equations P x^(2) - q x + R = 0 t...

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  12. If x^(2) - 16 x + 59 = 0 then what is the value of ( x - 6) ^(2) +...

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  13. If A and B are the roots of the equation A x^(2) - A^(2) x + AB = 0...

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  14. alpha and beta are the roots of the quadratic equation x^(2) - x - 1...

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  15. If a + b + c = 9, ab + bc + ca = 26 , a^(3) + b^(3) = 91 , b^(3) + ...

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  16. If x^(3) - 4 x ^(2) + 19 = 6 ( x - 1) then what is the value of [...

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  17. Cost of 8pencils, 5pens and 3erasers is rs.111. Cost of 9pencil, 6pens...

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  18. If 2 x + 3y - 5 z = 18 , 3 x + 2y + z = 29 and x + y + 3z = 17 then ...

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  19. PQR is an equllateral triangle whose side is 10 cm. What is the value ...

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  20. What is the area (in cm^2) of the circumcircle of a triangle whose sid...

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