Simple Probability Practice

Front

What is the definition of probability?

Back

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

Front

How do you calculate the theoretical probability of an event?

Back

Theoretical probability is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.

Front

If a spinner has 4 equal sections numbered 1 to 4, what is the probability of landing on a 3?

Back

The probability of landing on a 3 is 1/4.

Front

In a bag with 3 red, 2 blue, and 4 yellow marbles, what is the probability of pulling a blue marble?

Back

The probability of pulling a blue marble is 2/9.

Front

What is the probability of selecting a brown M&M from a bowl containing 4 yellow, 6 orange, 3 green, 5 blue, and 2 brown M&Ms?

Back

The probability of selecting a brown M&M is 2/20 or 1/10.

Front

How many times should Jayla expect the spinner to land on a 3 if she spins it 400 times?

Back

Jayla should expect the spinner to land on a 3 about 100 times.

Front

What is the total number of outcomes when rolling a six-sided die?

Back

The total number of outcomes when rolling a six-sided die is 6.

Front

If a bag contains 30 pieces of candy with 15 grape, 7 cherry, 3 lemon, and 5 strawberry, what is the probability of drawing a lemon?

Back

The probability of drawing a lemon is 3/30 or 1/10.

Front

What is the formula for calculating the probability of an event A?

Back

The formula is P(A) = Number of favorable outcomes for A / Total number of outcomes.

Front

What is the probability of spinning green on a spinner divided into 4 equal sections with one section green?

Back

The probability of spinning green is 1/4.