A single letter is selected at random from the word PROBABILITY .The probability that it is a vowel is
4/11
7/11
3/11
1
What is the probability of getting a head while tossing a coin
1/2
2
0
Two unbiased dice are thrown. Find the probability that six may be obtained as product
6/12
4/12
6/9
1/9
If p(A∩B) =1/4 ,p(A'∩B') =1/5 and p(A) = p(B) = p then p =
1/20
21/40
11/40
None of these
A die is rolled .If the outcome is an even number, what is the probability that it is a prime number
1/3
1/6
3/6
2/3
A bag contains 10 white and 20 red balls. The probability that a ball drawn at random is white equals
1/4
1/5
If two dice are tossed ,the probability that the product of numbers thrown will be greater than 23 is
5/36
7/36
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
If two coins are tossed once. What is the probability of getting atleast one head?
2/4
3/4
The probability of getting either 1 or 2 when a die is thrown is
