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Three coins are tossed once. Fmd the pro...

Three coins are tossed once. Fmd the probability of getting (i) 3 heads   (ii) 2 heads      (iii) atleast 2 heads (iv) atmost 2 heads     (v) no head   (vi) 3 tails(vii) exactly two tails   (viii) no tail  (ix) atmost two tails

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To solve the problem of finding the probabilities of various outcomes when three coins are tossed, we first need to identify the total number of possible outcomes and then count the favorable outcomes for each case. ### Step 1: Determine the total number of outcomes When three coins are tossed, each coin has 2 possible outcomes: Heads (H) or Tails (T). Therefore, the total number of outcomes when tossing three coins is given by: \[ \text{Total Outcomes} = 2^3 = 8 \] ...
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NCERT ENGLISH-PROBABILITY-All Questions
  1. Three coins are tossed once. Let A denote the event ‘three heads snow...

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  2. Describe the sample space for the indicated experiment : A coin is to...

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  3. Describe the sample space for the indicated experiment : A die is thr...

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  4. Describe the sample space for the indicated experiment : A coin is to...

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  5. Three coins are tossed. Describe(i)      Two events which are mutually...

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  6. Describe the sample space for the indicated experiment : One die of r...

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  7. Describe the sample space for the indicated experiment : 2 boys and 2...

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  8. Describe the sample space for the indicated experiment : A coin is to...

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  9. Describe the sample space for the indicated experiment : A coin is to...

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  10. Three coins are tossed once. Fmd the probability of getting (i) 3 he...

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  11. Check whether the following probabilities P(A) and P(B) are consisten...

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  12. Fill in the blanks m following table: P(A) P(B) (A nnB) P(A uuB)(i)...

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  13. A letter is chosen at random from the word ‘ASSASSINATION’. Find the ...

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  14. In a lottery, a person choses six different natural numbers at random...

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  15. Events E and F are such that P("not E or not F")=0. 25 State whether...

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  16. A and B are events such that P(A) = 0. 42, P(B) = 0. 48and P(A a n d B...

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  17. Give P(A) =3/5and P(B) =1/5dotFind P(A or B), if A and B are mutually ...

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

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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...

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