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A coin is tossed 3 times. The probabilit...

A coin is tossed 3 times. The probability of obtaining at least two heads will be

A

`3//8`

B

`1//2`

C

1

D

2

Text Solution

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The correct Answer is:
B
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ML KHANNA-PROBABILITY-Self Assessment Test
  1. There are 3 bags each containing 5 white balls and 2 black balls, and ...

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  2. Consider a family with two children. Assume that each child is as like...

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  3. A coin is tossed 3 times. The probability of obtaining at least two he...

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  4. 8 coins are tossed simultaneously. The probability of getting at least...

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  5. A sample of size 4 is drawn with replacement (without replacement) fro...

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  6. If two events A and B are such that P(A^(C))=0*3 P(B)=0*4 and P(AB^(...

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  7. If A and B are two events such that P(A cupB)=5//6,P(AcapB)=1//3,P(ove...

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  8. A and B each throw a die. Then it is 7:5 that A's throw is not greater...

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  9. Two persons each makes a single throw with a die. The probability they...

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  10. A cricket team has 15 members, of whom only 5 can bowl. If the names o...

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  11. On a toss of two dice, A throws a total of 5, then the probability tha...

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  12. A pair of unbiased dice are rolled together till a sum of either 5 or ...

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  13. For any two events A and B, prove that P[(A cap overline(B))cup(B ca...

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  14. If P(B)=(1)/(4),p(overset(-)A cap B cap overset(-)C )=(1)/(3),P(A cap ...

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  15. If the events A and B are independent, then P(AcapB) is equal to

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  16. If A and B are mutually exclusive events, then P(A cap B) equals

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  17. If A and B are suchg that events that P(A)gt0andP(B)ne1, then P(A'//B'...

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  18. P(A cup B)=P(A cap B) if and only if the relation between P(A) and P(B...

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  19. If A and B are arbitrary events, then

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  20. If A and B are arbitrary events, then a) P(A nn B) ge P(A)+ P(B) (b) ...

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