An unbiased die is tossed.Find the probability of getting a multiple of 3.
A). 1/3
B). 1/2
C). 3/4
D). 3/2
1/3
NA
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1. A bag contains 7 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is -.
2. Two dice are thrown simultaneously. What is the probability of getting the face numbers are same?
3. A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that all the four bulbs are defective.
4. A brother and sister appear for an interview against two vacant posts in an office. The probability of the brother's selection is 1/5th and that of the sister's selections is 1/3rd. What is the probab
5. Bag contain 10 back and 20 white balls, One ball is drawn at random. What is the probability that ball is white
6. Tow persons A and B appear in an interview for two vacancies. If the probabilities of their selections are 1/3 and 1/6 respectively, then the probability that none of them is selected, is
7. The number of tosses that have to be made in order that there is 99% probability of getting at least one head is ?
8. In which distribution successive trials are without replacement
9. Probability of occurrence of an event lies between
10. Two groups, A and B wrote an exam. The probability of A's pass is 2/7 and the probability of B's pass is 2/5. What is the probability that only one of them is passed out?
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