A problem in mathematics is given to 3 students whose chances of solving individually are 1/2,1/3 and 1/4 .
The probability that the problem will be solved atleast by one is
1/4
1/24
23/24
3/4
If p(A?B)=1/4 ,p(A'?B')=1/5 and p(A)=p(B)=p then p=
1/20
21/40
11/40
none
A die is thrown twice. The probability that at least one of the two items comes up with the number 3 is
5/12
11/36
1/12
7/24
If two coins are tossed once. What is the probability of getting atleast one head?
2/4
1
Suppose an outcome A occurs m times out of n equally likely outcomes in an experiment.Then odds in favour of A =
n/m
m/n
(n-m)/m
m/(n-m)
What is the resulting sample space if one coin is tossed
{H,H}
{T,T}
{H,T}
0
A bag contains 20 coloured balls.8 are red,6 are blue,3 are green,2 are white and 1 is brown.A ball is chosen at random from the bag.What is the probability that the ball chosen is blue or red?
6/20
8/20
14/20
Two cards are drawn successively with replacement from a well-shuffled pack of 52 cards. The probability of drawing two aces is
1/13
1/52
What is the probability of getting a head while tossing a coin
1/2
2
