Two dice are thrown simultaneously ,then the probability of getting an even number as the sum is
1/2
1/3
1/4
1/7
Three unbiased coins are tossed. What is the probability of getting at most two heads ?
3/4
3/8
7/8
In a school of 50 students there are 35 girls and rest are boys.Then the probability that a selected student will be a boy is
3/10
1/5
7/5
4/5
Three houses are available in a locality .Three persons apply for the houses .Each applies for one house with out consulting the others.The probability that all three apply for the same house is
2/9
3/9
5/9
1/9
In a box,there are 8 red,7 blue and 6 green balls .One ball is picked up randomly.What is the probability that it neither red nor green .
7/19
8/21
A bag contains 6 black and 8 white balls .One ball is drawn at random .What is the probability that the ball drawn is white ?
4/7
1/8
3/7
Ticket numbered 1 to 20 are mixed up and then a ticket is drawn at random .What is the probability that the ticket drawn has a number which is a multiple of 3 or 5 ?
2/5
8/15
9/20
If A and B are two independent events then the value of P(A/B ) is
0
1
P(A)
P(B)
From a pack of 52 cards, two cards are drawn together at random .What is the probability of both the cards being kings ?
1/15
25/57
35/256
1/221
A bag contains 2 red,3 green and 2 blue balls.Two balls are drawn at random.What is the probability that none of the balls drawn is blue ?
1/21
10/21
2/7
5/7
