Timed test
You will see a series of 10 questions. You have to write down the answer to the question. Easy enough eh? REMEMBER TO GIVE PROBABILITIES AS EITHER: FRACTIONDECIMALORPERCENTAGE
A fair, 6-sided dice is thrown. What is the probability of getting a 5?
A fair, 6-sided dice is thrown 1200 times. Roughly how many times would you expect the number 3 to come up?
Sam’s pencil case contains 3 red, 4 blue and 5 black pens. He takes a pen out without looking. What is the probability that it is blue?
A spinner has 5 sections with the following numbers on it: Each section is equally likely. What is the probability of the spinner landing on the number 4?
A box contains 12 red, 20 green and 8 yellow sweets. One is picked out at random. What is the probability that it is not red?
A fair, 6-sided dice is thrown. What is the probability of getting a multiple of 3?
The probability of Cheryl winning a race is 0.2 What is the probability that she doesn’t win?
The probability that it will rain today is 0.85 What is the probability that it will not rain?
A family has 3 children. One possible combination is Boy, Boy, Girl How many possible combinations are there? (You do not need to list them.)
A fair spinner has four sections labelled 1357 The spinner is spun and a fair coin is thrown. List all the possible outcomes (eg H,1) What is the probability of getting: Tails and a number less than 4?
Answers on the next pages
1) 1/6 2) 200 3) 4/12 = 1/3 4) 2/5 5) 28/40 = 7/10 6) 2/6 = 1/3 7) 0.8 8) 0.15 9) 8 10)h1,h3,h5,h7 t1,t3,t5,t7 2/8 = 1/4