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Null set Is...

Null set Is

A

a)`{x:x^2=1 or x=2}`

B

b){0}

C

c)`{x:x^2+1=0}`

D

d)`{x:xgt0 or xlt0}`

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UNITED BOOK HOUSE-MODEL QUESTION PAPERS-SET 4-EXERCISE
  1. Null set Is

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  2. The number of real solution of x^2-3|x|+2=0 are

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  3. Z is a complex number and Z.barZ=0, it is true only when

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  4. If 4th,7th nd 10th term of G.P are x, y and z, then

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  5. The co-ordinate of the foot of the perpendicular from the point (4, 3,...

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  6. The equation of the circle passes through the point (0, 4), (0, 0) and...

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  7. The value oflim(xrarr0)(1-cos4x)/x^2is

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  8. If f(2) = 2, and f'(2) = 1, then the value of lim(xrarr2)(xf(2)-2f(x))...

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  9. Three unbiased dice are thrown at a time. The probability of getting t...

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  10. If the variance of a distribution is 4 coefficient of variation is 5%,...

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  11. If n(X) = 4 and n(Y) = 8. Find the maximum and minimum numbers of.elem...

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  12. If A = {(a, b) : a + 3b = 12, a, bin N}, find the range of A.

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  13. Show that cos^6theta+sin^6theta=1/8(5+3cos4theta)

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  14. If n be an integer, then find the value of tan{(npi)/(2)+(-1)^(n).(pi...

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  15. If (1 + i) (2 +i) (3 + i)…..(n+i)=a+ib ,show that 2.5.10….(n^2+1)=a^2+...

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  16. If n is a even number, find the sum of the series upto n terms1^2-2^2+...

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  17. How many 5 digits telephone number can be formed from the digits from ...

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  18. Find the value of 3^2/3. 3^2/9. 3^2/27…..

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  19. If the gradiant of the line joining the points (2a, -2) and (1, -a)...

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  20. Find the ratio in which the plane 2x+3y+5z=1 divides the line segment ...

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