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Find the probability of at most two tail...

Find the probability of at most two tails or at least two heads in a toss of three coins.

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CBSE COMPLEMENTARY MATERIAL-PROBABILITY-LONG ANSWER TYPE QUESTIONS
  1. An urn contains 5 blue and an unknown number x of red balls.Two balls ...

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  2. Out of 8 points in a plane, 5 are collinear. Find the probability that...

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  3. Find the probability of at most two tails or at least two heads in ...

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  4. A, B and C are events associated with a random experiment such that P...

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  5. If (1+3p)/3,(1-p)/1,(1-2p)/2 are the probabilities of 3 mutually exclu...

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  6. Urn A contains 6 red and 4 black balls and urn B contains 4 red and 6 ...

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  7. If three distinct numbers are chosen randomly from the first 100 natur...

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  8. S = {1, 2, 3, ........., 30), A = {x: x is multiple of 7}, B = { x: x ...

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  9. S = {1, 2, 3, ........., 30), A = {x: x is multiple of 7}, B = { x: x ...

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  10. S = {1, 2, 3, ........., 30), A = {x: x is multiple of 7}, B = { x: x ...

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  11. One number is chosen at random from the number 1 to 100. Find the prob...

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  12. The number lock of a suitcase has 4 wheels with 10 digits, i.e. fro 0 ...

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  13. If A and B are any two events having P(A capB)=1/2 and P(B) =2/3,then ...

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  14. Three of the six vertices of a regular hexagon are chosen the rando...

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  15. A typical PIN (personal identification number) is a sequence of any ...

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  16. An urn contains 9 red, 7 white and 4 black balls. If two balls are ...

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  17. The probability that a new railway bridge will get an award for its de...

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  18. The probability that a new railway bridge will get an award for its de...

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  19. A girl calculates that the probability of her winning the ifrst prize ...

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  20. Two dice are thrown at the same time and the product of numbers appear...

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