# Probability with Explanation

Q1. Three unbiased coins are tossed. What is the probability of getting at least 2 heads?

A.
 1 3
B.
 1 8
C.
 1 2
D.
 1 4

Q2. One card is drawn at random from a pack of 52 cards. What is the probability that the card drawn is a face card?

A.
 1 4
B.
 1 13
C.
 9 52
D.
 4 13

Q3. One ticket is drawn at random from a bag containing 20 tickets numbered 1 to 20. What is the probability that the ticket was drawn having a number multiple of 3?

A.
 3 10
B.
 1 13
C.
 1 2
D.
 2 5

Q4. From a pack of 52 cards, one card is drawn at random. What is the probability that the card drawn is ten or a spade?

A.
 1 26
B.
 1 13
C.
 1 4
D.
 4 13

Q5. The probability that a card is drawn from a pack of 52 cards will be a diamond or a king, is:

A.
 4 13
B.
 2 13
C.
 1 13
D.
 1 52

Q6. A box contains 5 black, 4 orange and 3 white marbles. Three marbles are drawn at random. What is the probability that they are not of the same color?

A.
 52 55
B.
 3 55
C.
 41 44
D.
 3 44

Q7. A bag contains 6 orange and 4 black balls. Three balls are drawn at random. What is the probability that one ball is black and the other two are orange?

A.
 3 10
B.
 1 2
C.
 1 12
D.
 3 10   