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If in 6 trials of an experiment the prob...

If in 6 trials of an experiment the probability of a successes is 5 times the probability of a failure, then find the probability of two successes.

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A DAS GUPTA-Elementary Probability-Exercise
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  2. A private tutor admits 10 students, boys or girls, in a batch. The pr...

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  3. If in 6 trials of an experiment the probability of a successes is 5 ti...

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  4. Suppose the probability for A to win a game against B is 0.4. If A has...

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  5. A hotel has 5 rooms for rental and they are always occupied. The owner...

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  6. Numberse are selected at random, one at a time, from the two-digit num...

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  7. The minimum number of tosses of a pair of dice so that the probability...

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  8. There is a circle in the x-y plane whose equation is x^2+ y^2 = 49 a...

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  9. There are two circles in the x-y plane whose equations are x^2+ y^2 - ...

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  10. If there are 50 students in a class out of which 35 are boys.if only 6...

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  11. A real number x is selected at random from the solution set of inequ...

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  12. Three tangents are drawn at random to a given circle. Show that the od...

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  13. A floor is paved with rectangular marble blocks, each of length a and ...

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  14. A letter is taken out at random from 'ASSIGNMENT' and another from 'A...

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  15. A fair dice is rolled once. The probability that an odd number less t...

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  16. The probabilities of two independent events A and B are respectively ...

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  17. Two students A and B solve a problem. Their respective probabilities ...

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  18. If A, B are two equiprobable events such that P(A nn B)=1/4 and P(A' ...

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  19. Events A, B, C are mutually exclusive events such that P(A)=(3x+1)/(3)...

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  20. n letters are written to different persons and their addresses are als...

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