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How many times must a man toss a fair coin so that the probability of getting at least one head is more than 90%?

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PRADEEP PUBLICATION-PROBABILITY-EXERCISE
  1. If a leap year is selected at random, what is the chance that it will ...

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  2. An experiment succeeds twice as often as it fails. Find the probabilit...

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  3. How many times must a man toss a fair coin so that the probability of ...

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  4. In a game, a man wins a rupee for a six and loses a rupee for any othe...

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  5. Suppose we have four boxes A,B,C and D containing coloured marbles as ...

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  6. Assume that the chances of a patient having a heart attack is 40%. It ...

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  7. If each element of a second order determinant is either zero or one, w...

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  8. An electronic assembly consists of two subsystems, say, A and B. From ...

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  9. An electronic assembly consists of two subsystems, say, A and B. From ...

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  10. Bag I contains 3 red and 4 black balls and Bag II contains 4 red and 5...

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  11. If A and B are two events such that P(A) ne 0 and P(B/A) = 1, then

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  12. If P(A/B) > P(A), then which of the following is correct : :

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  13. If A and b are any two events such that P(A)+P(B)-P(A "and"B)=P(A), t...

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  14. Fill ups The set{} as a subset space S, associated with an experiment,...

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  15. Fill ups The set S as a subset of itself, where S is the sample space ...

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  16. Two events A and B associated with an experiment are said to be exclus...

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  17. Fill ups Two events E1 and E2 associated with an experiment are indepe...

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  18. If A and B are such that P (A'cup B')=(2)/(3) and P (A cup B) = (5)/(9...

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  19. Fill ups If A and B are two events such that P(A//B)=p, P(A)=p,P(B)=1/...

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  20. If E is an event associated with an experiment, find the value of P(E)...

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