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If sets A={1,2,3,4} and B={2,4,6,8}, the...

If sets A={1,2,3,4} and B={2,4,6,8}, then A-B is:

A

{-1,-2,-3,-4}

B

{1,3}

C

{1,0,3}

D

none of these

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JBD PUBLICATION-MODEL PAPER (4)-EXERCISE
  1. If sets A={1,2,3,4} and B={2,4,6,8}, then A-B is:

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  2. The number of relations that can be defined on the set {x,y,z} is:

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  3. The angle between the minute and hour hands of a clock at 5:40 is:

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  4. The value of i^9+i^19 is:

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  5. The value of ("^nCr)/(^nC(r+1)) is equal to:

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  6. If x, 2y, 3z are in A.P where distinct numbers x,y,z are in GP then th...

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  7. The lines x+(k-1)y+1=0 and 2x+k^2y-1=0 are at right angles if

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  8. The latus rectum of the ellipse 16x^2+y^2=16 is:

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  9. underset(xrarrpi/2)lim (1-sinx)/(cosx) is equal to:

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  10. A die is rolled then the probability that a number 1 or 6 may appear i...

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  11. Prove the following: (sin5x + sin 3x)/(cos5x + cos3x)=tan4x

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  12. Find the principal solutions of cosx=-1/sqrt2.

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  13. Express (-2 - 1/3 i)^3 in the form of a + ib.

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  14. Prove that: sum(r=0)^(n) 3^( r) ""^(n)C(r) = 4^(n).

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  15. Using Binomial Theorem, evaluate each of the following:(99)^5.

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  16. Find the points on x-axis which are at a distance of sqrt29 units from...

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  17. Write the negation of the following statements p: all cats scratch.

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  18. Find the component statements of the following compound statements and...

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  19. Find the range of f(x)=3/(2-x^2).

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  20. Prove that:(1+sin2x-cos2x)/(1+sin2x+cos2x)=tanx

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