Q.1
The the special rule of multiplication of probability, the events must be
Q.2
Two friends A and B apply for a job in the same company. The chances of A getting selected is $$\frac$$ and that of B is $$\frac$$. What is the probability that both of them get selected?
Q.3
On rolling a dice 2 times, the sum of 2 numbers that appear on the uppermost face is 8. What is the probability that the first throw of dice yields 4?
Q.4
Successive trials in binomial distribution are
Q.5
Two dice are thrown simultaneously ,what is the probability of getting a total of 7?
Q.6
In a class, there are 12 boys and 16 girls. One of them is called out by an enroll number, what is the probability that the one called is a girl?
Q.7
Two unbiased coin are tossed .What is the probability of getting at most one head?
Q.8
Two dice are thrown simultaneously. What is the probability of getting the sum of the face number is at most 5?
Q.9
Find the probability that getting 4 digit number with 1 in the unit place and 2 in the tens place when the numbers 1, 2, 3, 4 and 5 are arranged at random without repeating.
Q.10
Two dice are thrown simultaneously. What is the probability of getting the face numbers are same?
Q.11
Two dice are thrown simultaneously. What is the probability of getting the sum of the face number is odd?
Q.12
In a school, 45% of the students play football, 30% play volleyball and 15% both. If a student is selected at random, then the probability that he plays football or volleyball is:
Q.13
Two unbiased coins are tossed. What is probability of getting at most one tail ?
0 h : 0 m : 1 s