A school has five houses A, B, C, D and E, A class has 23 students, 4 from house A, 8 from house B, 5 from house C, 2 from house D and rest from house E. A single student is selected at random to be the class monitor. The probability that the selected student is not from A, B and C is.
4/23
6/23
8/23
17/23
A bag contains 5 black 7 red and 3 white balls. A ball is drawn from the bag at random. The probability that the ball drawn is not black is
1/5
2/5
2/3
1/10
A card is accidently dropped from a pack of 52 playing cards. The probability that it is an ace is
1/13
1/26
1/52
12/13
What is the probability that a leap year, selected at random will contain 53 Sundays?
3/7
1/7
2/7
53/336
A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of a red ball, then the no.of blue balls in the bag is
10
7
8
6
Each outcome of a random experiment is known as.
Elementary event
Sample space
Mutually exclusive event
None of these
Which of the following cannot be the probability of an event.
1/3
0.1
3%
17/16
The probability of getting a bad egg in a lot of 400 is 0.035. The number of bad eggs in the lot is
14
21
51
One ticket is drawn at random from a bag containing tickets numbered 1 to 40. The probability that the selected ticket has a number which is a multiple of 5 is
4/5
If two coins are tossed simultaneously, then the probability of getting no head is
1/2
1/4
1/6
