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
If A and B are mutually exclusive events, then p(A∩B)=
p(A).p(B)
0
p(A)+p(B)
None of these
A bag contains 10 white and 20 red balls. The probability that a ball drawn at random is white equals
1/3
1/2
1/4
1/5
What is the probability of getting a head while tossing a coin
1
2
What is the resulting samplespace if one coin is tossed
{H,H}
{T,T}
{H,T}
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
1/9
2/9
2/10
1/10
If A and B are mutually exclusive events then p(A∪B)=
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
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
