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If alpha, beta, gamma are the roots of t...

If `alpha`, `beta`, `gamma` are the roots of the equation `px^3 - qx + r = 0`, then the value of `alpha + beta + gamma` is

A

q/p

B

(-q)/P

C

0

D

(-)r

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UNITED BOOK HOUSE-Question Paper 2014-Exercise
  1. Which of the following is correct?

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  2. If f(0) = 1, f(l) = 4, f(2) = 10, then the value of Delta^2 f(0) is

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  3. If alpha, beta, gamma are the roots of the equation px^3 - qx + r = 0,...

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  4. For any two events A and B. Which of the following is correct?

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  5. Two fair dice are thrown. If the sum of two numbers obtained is 8, the...

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  6. If the number of educated persons is 65% of the population, then in Pi...

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  7. If the AM of 13, 15, 16, 12, x be y and that of 13, 15, 16, 12 , y be ...

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  8. If arithmetic mean and coefficient of variation of x is 6 and 50% resp...

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  9. If 2u = 5x and the harmonic mean of x is -0.4, then find the harmonic ...

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  10. If P(A uu B) = 2/3 then find the value of P(A^C nn B^C).

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  11. If P(A | B) = a and P(B) = b, then express P(B - A) in terms of a and ...

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  12. What is the probability of drawing one white ball from a bag containin...

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  13. If P(A | B) = 1/4 , then what is the value of P(A^C/B)?

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  14. If P(A1) = 0.2, P(A2) = 0.1 and P(A3) = 0.3 and these events are mutua...

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  15. If the cost of a dozen eggs is Rs. 48. Let's find the cost of 32 eggs.

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  16. Write true or false: "Index number is unit free number".

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  17. Find the arithmetic mean of first n odd positive integers.

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  18. Find the harmonic mean of 1, 1/2. 1/3,………..1/n

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  19. If the standard deviation of the set of numbers 1,2,3,……….k is 2, then...

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  20. What are the limitations of the classical definition of probability?

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