10 books are placed at random in a shelf. The probability that a pair of books will always be together is -.
A). 1/10
B). 9/10
C). 1/5
D). 3/10
1. An unbiased cubic die is thrown.What is the probabiltiy of getting a multiple of 3 or 4?
4. In which distribution successive trials are without replacement
7. If three caps are picked at random, what is the probability that two are red and one is green ?
8. An unbiased die is tossed.Find the probability of getting a multiple of 3.