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Suppose that two cards are drawn at ran...

Suppose that two cards are drawn at random from a deck of cards. Let X be the number of aces obtained. Then the value of E(X) is

A

`(37)/(221)`

B

`(5)/(13)`

C

`(1)/(13)`

D

`(2)/(13)`

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The correct Answer is:
D
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MODERN PUBLICATION-PROBABILITY-Objective Type Question (A. Multiple Choice Questions)
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  6. A die is thrown once, then the probability of getting a number greater...

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  7. Let A and B be two events. If P(A) = 0.2, P(B)=0.4, P(A uu B)=0.6, the...

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  8. Let A and B be two events such that P(A)=0.6, P(B)=0.2 and P(A//B)=0.5...

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  9. If E and F are independent events such that 0ltP(E)lt1 and 0ltP(F)lt1,...

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  10. Let 'X' be a discrete random variable. The probability distribution of...

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  11. If X be a random variable taking values x(1),x(2),x(3),….,x(n) with pr...

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  12. If A and B two events such that P(A)=0.2, P(B)=0.4 and P(A cup B)=0.5,...

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  13. An urn contains 6 balls of which two are red and four are black. Two b...

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  14. If E and F are independent events, P(E)=(1)/(2) and P(F)=(1)/(3), then...

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  15. The probability of obtaining an even prime number on each die, when a...

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  16. If P(A)=0.8, P(B)=0.5 and P(B/A)=0.4, then find P(A/B)

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  17. If P(A)7/(13),P(B)=9/(13) and P(AnnB)=4/(13), find P(A/B)dot

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  18. if A and B be two events such that P(A)=1/4, P(B)=1/3 and P(AuuB)=1...

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  19. If P(A)=(1)/(2),P(B)=0, then P(A/B) is :

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  20. The probability of obtaining an even prime number on each die, when a...

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