Probability Quiz

Which event is least likely to happen?

• Rolling a number less than 7 on a fair six-sided dice

• Rolling a number greater than 3 on a fair six-sided dice

• Rolling a 6 on a fair six-sided dice

Which event is most likely to happen?

• Flipping heads with a coin

• Picking a red marble from a bag with 8 red marbles and 2 blue marbles

• Rolling a 5 on a fair six-sided dice

A spinner has 4 equal sections labeled 1, 2, 3, and 4. If you spin it, which event is least likely?

• Landing on a 1

• Landing on an even number

• Landing on a 5

If you roll a dice, you’re equally likely to get any of the numbers from 1 to 6.

• True

• False

If you roll a dice and then roll it again, are these events:

• Dependent

• Independent

Which of the following pairs of events are independent?

• Choosing two cards in a row from a deck without putting the first one back

• Rolling a dice and flipping a coin

• Picking a red marble from a bag, not putting it back, then picking a blue marble

You and a friend each flip a coin. What’s the chance that both coins land on heads?

• 1 out of 4

• 1 out of 2

• 1 out of 8

The outcome of drawing a card from a deck will change if you put the card back and shuffle before the next draw.

• True

• False

Which of these would affect the likelihood of the next event?

• Picking a marble from a bag and then picking another without putting the first one back

• Rolling a dice twice in a row

• Flipping a coin and then rolling a dice

What is the probability of rolling an even number on a fair six-sided dice?

• 1 out of 2

• 1 out of 3

• 1 out of 6