Basic Probability

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What is the formula for calculating probability?

Back

Probability = (Number of favorable outcomes) / (Total number of possible outcomes)

Front

What is the probability of spinning a green section on a spinner with 4 equal sections: Red, Blue, Green, Yellow?

Back

1/4

Front

In a bag with 3 red, 2 blue, and 5 green marbles, what is the probability of picking a blue marble?

Back

2/10 or 1/5

Front

What is the probability of rolling a 3 on a standard six-sided die?

Back

1/6

Front

If a standard deck of cards has 52 cards, what is the probability of drawing an Ace?

Back

4/52 or 1/13

Front

What is the probability of drawing a heart from a standard deck of cards?

Back

13/52 or 1/4

Front

What is the probability of rolling an odd number on a standard six-sided die?

Back

3/6 or 1/2

Front

In a class of 30 students, 18 are girls. What is the probability of randomly selecting a girl?

Back

18/30 or 3/5

Front

What is the probability of pulling a Twix or a Snickers from a bag containing 3 Twix, 8 Snickers, 5 Lollipops, and 4 Reese’s?

Back

11/20