Simple Events Probability

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 probability of a simple event?

Back

The probability of a simple event is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.

Front

What is the probability of choosing a black or white bow from a bag containing 10 black, 20 white, and 5 gray bows?

Back

The probability is 6/7.

Front

What is the probability of rolling a number greater than 1 on a single die?

Back

The probability is 5/6.

Front

What is the probability of spinning a 7, 8, or 9 on a spinner numbered 1 to 12?

Back

The probability is 1/4.

Front

What is the probability of rolling a number less than 8 on a six-sided die?

Back

The probability is 100%.

Front

How do you express probability as a fraction?

Back

Probability can be expressed as a fraction by using the formula: P(Event) = Number of favorable outcomes / Total number of outcomes.

Front

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

Back

The total number of outcomes is 6.

Front

If a bag contains 25 marbles, 8 of which are green, what is the probability of pulling a green marble?

Back

The probability is 8/25.

Front

What is the complement of an event in probability?

Back

The complement of an event is the probability that the event does not occur, calculated as 1 - P(Event).