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
Two unbiased dice are thrown. Find the probability that six may be obtained as product
6/12
4/12
6/9
1/9
What is the probability of getting a head while tossing a coin
1/2
2
0
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
none of these
Nine playing cards are numbered 2 to 10 .A card is selected from them at random. probability that the card will be a multiple of 4 is
2/9
2/10
1/10
If A and B are two events such that p(A)=1/4 ,p(B)=1/2 and p(A and B)=1/8 .Then p(notA and notB) is
1/8
3/8
5/8
7/8
What is the probability that there are 53 Sundays in a leap year ?
1/7
2/7
3/7
4/7
If A and B are two events in a sample space then
p(A∪B)≥p(A)+p(B)
p(A∪B)≤p(A)+p(B)
p(A∪B)=p(A)+p(B)
If A and B are mutually exclusive events then p(A∪B)=
p(A).p(B)
p(A)+p(B)
None of these
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
