A normal die is rolled.The probability that the number on the uppermost face when it stops rolling will not be 5 is
1/6
2/6
3/6
5/6
A die is rolled .If the outcome is an even number, what is the probability that it is a prime number
1/3
2/3
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 at random 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 atleast one head?
1/4
2/4
3/4
A problem in mathematics is given to 3 students whose chances of solving individually are 1/2,1/3 and 1/4 .The probability that the problem will be solved atleast by one is
1/24
23/24
The probability of getting either 1 or 2 when a die is thrown is
1/2
Two cards are drawn successively with replacement from a well-shuffled pack of 52 cards. The probability of drawing two aces is
1/13
1/13 × 1/17
1/52 × 1/51
1/13 × 1/13
A bag contains 10 white and 20 red balls. The probability that a ball drawn at random is white equals
1/5
A die is thrown twice. The probability that atleast one of the two items comes up with the number 3 is
5/12
11/36
1/12
7/24
Three squares of chess board are chosen at random, then the probability that two are of one colour and one of another is
16/21
8/21
32/12
4/9
