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If ""^(16)C(r)=""^(16)C(r+1) then the va...

If `""^(16)C_(r)=""^(16)C_(r+1)` then the value of `""^(r)P_(r-3)` is

A

31

B

120

C

210

D

840

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2008-MULTIPLE CHOICE QUESTIONS
  1. The function f(x)=e^(ax)+e^(-ax),agt0 is monotonically increasing for

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  2. Find the following: int 1/(x(x^7+1))dx

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  3. If ""^(16)C(r)=""^(16)C(r+1) then the value of ""^(r)P(r-3) is

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  4. The coefficient of x^(-10) in (x^(2)-(1)/(x^(3)))^(10) is

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  5. If the matrix [(a,b),(c,d)] is commutative with the matrix [(1,1),(0,1...

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  6. If 1,omega,omega^(2) are cube roots of unity, then |(1,omega^(n),omega...

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  7. Let A={1,2,3} and B={2,3,4}, then which of the following relations is ...

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  8. One possible condition for the three points (a,b),(b,a) and (a^(2),-b^...

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  9. If the m^(th) term and the n^(th) term of an A.P. are respectively (1)...

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  10. Find the following: int1^4abs[x-2]dx

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  11. Find int0^(pi/2) logtanxdx

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  12. Find int 1/sqrt(2x-x^2)dx

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  13. If h(x)=(x^(3)-a^(3))/(x-a), then find h(a).

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  14. The value of (1-omega+omega^(2))^(5)+(1+omega-omega^(2))^(5), where om...

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  15. The degree of the differential equation [1+((dy)/(dx))^(2)]^(5//3)=(d^...

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  16. The differential equation of all parabolas whose axes are parallel to ...

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  17. The solution of the differential equation (dy)/(dx)=e^(y+x)+e^(y-x) is

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  18. The value of the integral int(0)^(2)|x^(2)-1|dx is

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  19. If x=e^(t)sint, y=e^(t)cost then (dy)/(dx) at t=pi is

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  20. The value of (dy)/(dx) at x=(pi)/(2), where y is given by y=x^(sinx)+s...

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