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A pair of coins is tossed once. Find the...

A pair of coins is tossed once. Find the probability of showing at least one head is :

A

`1/2`

B

`2/3`

C

`3/4`

D

`1/4`

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MODERN PUBLICATION-PROBABILITY-EXERCISE
  1. P(E/F) is equal to :

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  2. If P(A)=0.3, P(B)=0.4, find P(AuuB). where A and B are independent eve...

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  3. A pair of coins is tossed once. Find the probability of showing at lea...

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  4. A and B are events such that 2P(A)=P(B)=5/13, P(A/B)=2/5, then P(AuuB)...

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

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  6. If P(A)=3/5 and P(B)=1/5, find P(AnnB) if A and B are independent even...

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

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  8. If A and B are events such that P(A)=0.4, P(B)=0.5 and P(B/A)=0.6, the...

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

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  10. In a box containing 100 bulbs, 10 bulbs are defective. Probability th...

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  11. In rolling of two fair six faced dice, the probability of getting tota...

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  12. Three dice are rolled once. The chance of getting a score of 5 is :

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  13. The probability distribution of 'X' is : find the value of k:

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  14. If two dice are thrown simultaneously, then the probability that the s...

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  15. A fair six-faced die is rolled 12 times. The probability that each fac...

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  16. In a box containing 100 bulbs, 10 bulbs are defective. Probability th...

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  17. It is given that the events A and B are such that P(A)=1/4, P(A/B)=1/2...

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  18. A die is thrown. Let A be the event that the number obtained is grea...

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  19. One ticket is selected at random from 50 tickets numbered 00, 01, 02...

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  20. An urn contains nine balls of which three are red, four are blue and t...

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