Simple Probability and the Complement Rule

Front

What is the probability of not rolling a 6 on a standard number cube?

Back

5/6

Front

What is the probability of spinning an even number on a spinner with numbers 1 to 6?

Back

50%

Front

What does P(not A) represent in probability?

Back

The probability of the event A not occurring.

Front

If 75% of students take art, what is the probability that a randomly chosen student does NOT take art?

Back

0.25

Front

What is the probability of selecting a red marble from a bag containing 7 blue, 5 red, and 8 green marbles?

Back

1/4

Front

Define probability.

Back

Probability is a measure of the likelihood that an event will occur.

Front

What is the complement of an event?

Back

The complement of an event A is the event that A does not occur.

Front

If the probability of event A is 0.3, what is the probability of not A?

Back

0.7

Front

How do you calculate the probability of an event?

Back

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

Front

What is the total number of outcomes when rolling a standard die?

Back

6