Simple Probability

Front

What is probability?

Back

Probability is a measure of how likely an event is to occur, expressed as a number between 0 and 1.

Front

What is a simple event in probability?

Back

A simple event is an event that consists of a single outcome.

Front

What is the probability of an event that is certain to happen?

Back

The probability of an event that is certain to happen is 1.

Front

What is the probability of an event that is impossible?

Back

The probability of an event that is impossible is 0.

Front

How do you calculate the probability of a single event?

Back

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

Front

What is the probability of rolling an odd number on a 6-sided die?

Back

There are 3 odd numbers (1, 3, 5) out of 6 possible outcomes, so the probability is 3/6 or 1/2.

Front

What is the probability of rolling an even number on a 6-sided die?

Back

There are 3 even numbers (2, 4, 6) out of 6 possible outcomes, so the probability is 3/6 or 1/2.

Front

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

Back

There are 2 black aces in a deck of 52 cards, so the probability is 2/52 or 1/26.

Front

What is the probability of drawing a black 5 from a standard deck of cards?

Back

There are 2 black 5s in a deck of 52 cards, so the probability is 2/52 or 1/26.

Front

What is the probability of spinning red on a spinner with 5 red and 7 blue sections?

Back

The probability is 5/(5+7) = 5/12.