The probability of getting either 1 or 2 when a die is thrown is
1/4
1/2
1/6
1/3
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
1
Two unbiased dice are thrown. Find the probability that six may be obtained as product
6/12
4/12
6/9
1/9
If A and B are two events in a sample space then
p(A∪B)≥p(A)+p(B)
p(A∪B)≤p(A)+p(B)
p(A∪B)=p(A)+p(B)
none of these
What is the probability that there are 53 Sundays in a leap year ?
1/7
2/7
3/7
4/7
probability of an impossible event is
0
not defined
-1
What is the resulting sample space if one coin is tossed
{H, H}
{T, T}
{H, T}
If two coins are tossed once. What is the probability of getting atleast one head?
2/4
3/4
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
Two cards are drawn successively with replacement from a well-shuffled pack of 52 cards. The probability of drawing two aces is
1/13
1/13×1/17
1/52×1/51
1/13×1/13
