Three unbiased coins are tossed. What is the probability of getting at most two heads ?
3/4
1/4
3/8
7/8
One card is drawn at random from a pack of 52 cards .What is the probability that the cards drawn is a face card (Jack, Queen , and king only ?
1/13
3/13
9/52
A bag contains 20 coloured balls.8 are red,6 are blue,3 are green,2 are white and 1 is brown.A ball is chosen atrandom from the bag.What is the probability that the ball chosen is blue or red?
6/20
8/20
14/20
1
If two coins are tossed once. What is the probability of getting at least one head?
2/4
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
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
Two dice are thrown simultaneously ,then the probability of getting an even number as the sum is
1/2
1/3
1/7
The probability that a leap year will contain 53 Sundays is
If P(B)= 3/4 ,
1/6
1/9
1/12
1/15
The probability of getting at least one tail in 4 throws of a coin is
15/26
15/16