Questions.
Question 1.
- a) What is the probability of tossing two consecutive heads on a two sided unbiased coin
- b) What is the probability of tossing two heads and a tail in no particular order
- c) What is the probability of tossing two heads and a tail in that particular order
- d) What is the probability of not tossing two heads and a tail in that particular order
Question 2.
Two six sided die are rolled at the same time, what is the probability of the number totalling:
- a) 7
- b) 3
- c) 1
Question 3.
If a mother has given birth to two boys, what is the probability her next child will be a:
- a) girl
- b) boy
Question 4.
What is the probability of rolling a 6 on the dice and heads on the coin?
Question 5.
a. If four cards are drawn without replacement from a deck of cards, what is the probability that they are all kings
b. a. If four cards are drawn with replacement from a deck of cards, what is the probability that they are all kings
Question 6.
If there is a 25% chance a team will win a game of soccer and a 75% chance they will lose, they can not draw.
- a) What is the probability they will win the two matches they play?
- b) What is the probability they will lose the two matches they play?
- c) Win one and lose the other
Question 7.
A student finds a 6 sided die, only with odd numbers, 1, 3, 5, 7, 9, 11 and a normal 6 sided dice
What is the probability of the numbers totalling 8 if both are rolled at the same time?
Answers.
- 1a) 25% b) 3/8 c) 1/8 d) 7/8
- 2) a) 1/6 b) 1/18 c) 0
- 3) a) 1/2 b) 1/2
- 4) 1/12
- 5a) 1/13
- b) (4/52)^(4)
- 6) a) 1/16 b) 9/16 c) 3/8
- 7) 3/12