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, where 0 means the event will not happen and 1 means it will definitely happen.

Front

What is an even number?

Back

An even number is an integer that is exactly divisible by 2, such as 0, 2, 4, 6, etc.

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself, such as 2, 3, 5, 7, etc.

Front

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

Back

The probability is 3/6 or 1/2, since the even numbers are 2, 4, and 6.

Front

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

Back

The probability is 3/6 or 1/2, since the prime numbers are 2, 3, and 5.

Front

What is the probability of flipping a coin and getting heads?

Back

The probability is 1/2, since there are two possible outcomes: heads or tails.

Front

What is the probability of flipping a coin and getting tails?

Back

The probability is 1/2, since there are two possible outcomes: heads or tails.

Front

What is the probability of spinning green on a spinner with 4 equal sections: red, blue, green, yellow?

Back

The probability is 1/4, since there is one green section out of four.

Front

How do you calculate the probability of an event?

Back

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

Front

What is the probability of drawing a green marble from a jar with 5 green marbles and 14 total marbles?

Back

The probability is 5/19, since there are 5 favorable outcomes (green marbles) out of 19 total marbles.