If 4 P(A) = 6 P(B) = 10 ; P (A∩B) = 1, then (B/A) is
3/5
7/10
19/60
2/5
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 is
0. 4
0.8
1.2
1.4
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 complete cycle of a traffic light take 60 s. During each cycle the light is green for 255, yellow for 5 s and red for 30s. At a randomly chosen time, the probability that the light will not be green, is
1/3
1/4
4/12
7/12
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
1/5
3/8
4/5
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
A coin and six faced die, both unbiased, are thrown simultaneously. The probability of getting a head on the coin and an odd number on the die, is
1/2
3/4
2/3
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 P(A) = P(B) = P(C) = 1/4, P (AB) = P (CB) = 0 and P(AC) = 1/8, then P(A+B) is equal to
5/8
37/64
An integer is chosen at random from first two hundred numbers. Then, the probability that the integer chosen is divisible by 6 or 8 is
2/4
None of these
