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If in an arithmetic progression, the sum...

If in an arithmetic progression, the sum of n terms is equal to the sum of r terms then the sum of `(n+r)` terms is

A

`n+r`

B

`-1`

C

1

D

0

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2007-MULTIPLE CHOICE QUESTIONS
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  2. If the sum of the roots of the equation 2x^(2)+4x+C=0 be equal to the ...

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  3. If in an arithmetic progression, the sum of n terms is equal to the su...

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  4. If f(x)=x(x-1)(x-2), 0 le x le 4, then the point xi which satisfies Me...

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  5. If log(a)x=y, then the value of loga(a/x) is

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  6. The sides of the rectangle of the greatest area that can be inscribed ...

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  7. The polar co-ordinates of the point (-sqrt(3), 1) are

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  8. If two sides of a triangle are 2sqrt""3-2 and 2sqrt""3+2 and their inc...

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  9. The solution of the equation (dy)/(dx)=xy+y subject to the conditions,...

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  10. An integrating factor of the differential equation (dy)/(dx)(x log x)+...

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  11. Which one of the following is incorrect for any two events A and B ?

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  12. The sum of the infinite series 1+(1)/(|ul(2))+(1.3)/(|ul(4))+(1.3.5)/(...

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  13. Two mappings f : R to R and g : R to R are defined in the following wa...

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  14. If the arithmetic mean of the roots of x^(2)-2ax+b=0 is A and the geom...

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  15. Let y=a(1-cos theta), x = a(theta - sin theta). Then y regarded as a f...

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  16. Let I=int(-2)^(+2){x-[x]}dx when [x] represents the greatest integer n...

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  17. A particle moves according to the law s=t^(3)-9t^(2)+24t. The distance...

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  18. The value of int (1)/(e^(x)+e^(-x))dx is

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  19. If f'(2)=1, then lim(h to 0)(f(2+h)-f(2-h))/(2h) is equal to

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  20. Two fair dice are thrown. The probability that the sum of the numbers ...

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