Simple Probability

Front

What is the definition of probability?

Back

Probability is the chance that some event will occur.

Front

What is P(not A) if P(A) = 1/4?

Back

P(not A) = 3/4.

Front

Is it possible for an event with a probability of 0% to occur?

Back

No, it is impossible.

Front

Is it certain for an event with a probability of 100% to occur?

Back

Yes, it is certain.

Front

What does it mean if an event is 'more likely' to happen?

Back

It means the probability of the event is greater than 50%.

Front

What does it mean if an event is 'less likely' to happen?

Back

It means the probability of the event is less than 50%.

Front

If a spinner has 4 equal sections: red, blue, green, and yellow, what is the probability of landing on green?

Back

P(green) = 1/4 or 25%.

Front

If a spinner has 3 sections: red, blue, and orange, what is the probability of landing on orange?

Back

P(orange) = 1/3 or approximately 33.33%.

Front

What is the probability of selecting a candy that is not orange if there are 4 orange candies and 6 total candies?

Back

P(not orange) = 2/3.

Front

If a spinner has 5 sections: 2 red, 2 blue, and 1 green, what is the probability of landing on blue?

Back

P(blue) = 2/5 or 40%.