# GED Math Extra Prep: Probability

Probability questions on the GED Math text will often ask you to calculate single or multiple probabilities. The following practice questions ask you to do one of each type.

## Practice Questions

*Both questions are based on the following information.*

The probability that it will snow during the next three days is given in the following table.

- What is the probability that it will
*not*snow on Tuesday?

**A.**20%

**B.**40%

**C.**60%

**D.**80% - What is the probability that it will snow on all three days?

__________

## Answers and Explanations

- The correct answer is D.
The probability of snow on Tuesday is 20%. Therefore, the probability that it will not snow on Tuesday is 100% – 20% = 80%.

- The correct answer is 5.6%.
Calculate the probability that it will snow on all three days by multiplying all three probabilities together. When plugging these percentages into your calculator, you can press the % button on the calculator after typing in each number.

(70%)(20%)(40%)=0.056

To convert this decimal answer into a percentage, simply multiply it by 100 to get