The probability that in the toss of two dice, we obtain the sum 7 or 11, is
1/6
1/18
2/9
23/108
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
P(A) = 4/5, P(B') = 2/5 and P(A∩B) = 1/2, then P(A∩B') is
3/10
5/2
2/5
5/7
If 4 P(A) = 6 P(B) = 10 P (A∩B) = 1, then (B/A) is
3/5
7/10
19/60
If A and B are mutually exclusive events with P(A) = 1/2 x P(B) and AυB = S, then P(A) is equal to
2/3
1/3
1/4
3/4
If the random variable X takes the values x1,x2,x3,....x10 with probabilities P(X = xi) = Ki then the value of K is equal to.
1/10
1/55
7/12
A number is chosen at random among the first 120 natural numbers. The probability if the number chosen being a multiple of 5 or 15 is
1/8
1/5
1/24
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)
If P(A) = P(B) = x and P(A∩B) = P(A'∩B') = 1/3, then x is equal to
1/2
If A and B are two independent events such that P(A∩B') = 3/25 and P(A' ∩B) = 8/25, then P(A) is
3/8
4/5
