If A and B are two events such that p(A)=1/4 ,p(B)=1/2 and p(A and B)=1/8 .Then p(notA and notB) is
1/8
3/8
5/8
7/8
E and F are two events associated with a random experiment for which p(F)=0.35 ,p( E or F)=0.85 , p(Eand F)=0.15.Find p(E)
0.35
0.65
0.5
0.25
A single letter is selected at random from the word PROBABILITY .The probability that it is a vowel is
4/11
7/11
3/11
none of these
What is the probability of getting a head while tossing a coin
1/2
1
2
0
probability of an impossible event is
not defined
-1
What is the resulting sample space if one coin is tossed
{H, H}
{T, T}
{H, T}
If
p(A)
1-p(A)
p(A)-1
1-(p(A))2
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
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)
The probability of getting either 1 or 2 when a die is thrown is
1/4
1/6
1/3
