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
When a die is thrown, the probability of getting an odd number less than 3 is.
1/6
1/3
1/2
0
One card is drawn from a well-shuffled deck of 52 cards. Then the probability of getting a spade is
1/52
1/4
None of these
Arun buys a fish from a shop for his aquarium. The shop keeper takes out one fish at random from a tank containing 5 male fishes and 8 female fishes. The probability that the fish taken out is a male fish is
5/8
5/13
5/24
5/40
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
12 defective pens are accidentally mixed with 132 good ones. It is not possible to just look at a pen and tell whether or not it is defective .One pen is taken out at random from this lot. What is the probability that the pen taken out is a good one.
9/12
11/12
1/132
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
The probability of throwing a number greater than 2 with a fair dice is
4/5
Which of the following cannot be the probability of an event.
0.1
3%
17/16
What is the probability that a leap year, selected at random will contain 53 Sundays?
3/7
1/7
2/7
53/336
