Probability and Chance

What word best describes the probability of tomorrow being Wednesday?

• 50-50 Chance

• Likely

• Certain

• Impossible

In a bag of marbles there are 10 that are red, 6 that are blue and 9 that are yellow. What are the three possible outcomes when choosing a marble from the bag?

• Orange, Red, Yellow

• Red, Blue, Yellow

• Purple, Pink, Blue

• Rainbow

Which simplified fraction represents the probability of choosing a yellow marble from a bag containing 3 blue marbles, 5 purple marbles and 4 yellow marbles?

• 4/12

• 4/8

• 1/3

• 1/2

If we converted the fraction 2/5 to a decimal it would be

• .20

• .33

• .50

• .40

If there is a 9 in 45 (9/45) chance of choosing a purple coloured marble out of a bag, how could we show this fraction in it's simplest form?

• 1/2

• 1/3

• 3/5

• 1/5