If the probability of A to fail in an examination is 0.2 and that for B is 0.3, then probability that either A or B is fail, is
0.5
0.44
0.8
0.25
A normal die is rolled.The probability that the number on the uppermost face when it stops rolling will not be 5 is
1/6
2/6
3/6
5/6
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
The probability that in the toss of two dice, we obtain the sum 7 or 11, is
1/18
2/9
23/108
Out of 40 consecutive natural numbers, two are chosen at random, then the probability that the sum of these numbers is odd, is
What is the resulting sample space if one coin is tossed
{H,H}
{T,T}
{H,T}
0
A bag contains 5 brown and 4 white socks. A man pulls out two socks. The probability that both the socks are of the same color is
The probability that at least one of the events A and B occurs is 0.6. If A and B occur simultaneously with probability 0.2, then the value of
1.2
1.4
0.4
A box contains 4 white pens and 2 black pens. Another box contains 3 white pens and 5 black pens. If one pen is selected from each box, then the probability that both the pens are white, is
If P (A∩B) = 1/3, P(A∪B) = 5/6 and P(A) = 1/2, then which of the following is correct?
A and B are independent events
A and B are mutually exclusive events
P(A) = P(B)
P(A) < P(B)