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
1/6
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
The probability of choosing at random a number that is divisible by 6 or 8 from among 1 to 90 is
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
Three squares of chess board are chosen at random, then the probability that two are of one color and one of another 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
Five horses are in a race. Mr.A selects two of the horses at random and bets on them. The probability that Mr. A selected the winning horse is
A normal die is rolled.The probability that the number on the uppermost face when it stops rolling will not be 5 is
2/6
3/6
5/6
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)
