One card is drawn from a pack of 52 cards each of the 52 cards being equally likely to be drawn, then the probability that the card drawn is an ace is.
1/4
1/13
1/2
1/52
The probability that atleast one of the events A and B occurs is 0.8.If A and B occur simultaneously with probability 0.3 , then the value of
0.9
1.2
2.2
2.4
In a probability distribution of random variable x, the sum of the probabilities is always.
less than 1
0
1
greater than 1
Three houses are available in a locality.Three persons apply for the houses.Each applies for one house without consulting the others.The probability that all the three apply for the same house is
1/9
2/9
7/9
8/9
A random variable has the following probability distribution.
then the value of P is.
-1/10
1/10
-1
5
If 5 coins are tossed simultaneously, then the probability that at least one head turning up is.
1/32
5/32
7/16
31/32
The probability of choosing at random a number that is divisible by 6 or 8 from among 1 to 90 is.
1/6
1/30
11/80
23/90
Let 0 < P(A) < 1 . 0 <P(B) < 1 and P(A ∪ B) = P(A) + P(B) - P(A) P(B) then
P(B/A) = P(B) - P(A)
P(A/B) = P(A) - P(Bc)
P(A∪B)c = P(A)c . P(B)c
P(Ac∪Bc) = P(Ac) + P(Bc)
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
A coin is tossed and a dice is rolled.The probability that the coin shows the head and the dice shows 6 is
1/24
