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A coin is tossed twice,what is the proba...

A coin is tossed twice,what is the probability that atleast one tail occurs?

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In this experiment, the possible outcomes are .S=H H, H T, T H, T T. 586 Therefore, the probability that atleast one tail occur .=3/4.
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V PUBLICATION-PROBABILITY-QUESTION BANK
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  9. Three coins are tossed once. Find the probability of getting. (i) 3 he...

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  11. A letter of the word ASSASSINATION are randomly chosen. Find the proba...

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  13. Check whether the following probabilites P(A) and P(B) are consistentl...

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  14. Fill in the blank space.

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  15. Given P(A)=3/5 and P(B)=1/5 Find P(A or B), if A and B are mutually ...

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  16. If E and F are events such that P(E)=1/4,P(F)=1/2,and p(E and F)=1/8....

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  17. Events E and F are such that P(not E or not F)=0.25, state whether E a...

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  18. If A and B are two events such that P(A)=0.42,P(B)=0.48 and P(AbigcapB...

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  19. In class XI of a school 40% of the students study Mathematics and 30% ...

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  20. In an entrance test that is graded on the basis of two examinations, t...

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