Introduction to Probability

This lecture series introduces the concept of probability and gives examples of calculating basic probability. Watch the videos and complete the interactive exercises.

Practice

Simple probability - Answers

1. $\mathrm{P}($ roll a 2 $)=\frac{1}{6} \approx 0.17$

2. $\mathrm{P}($ not a rap song $)=\frac{13}{22} \approx 0.59$

3. $\mathrm{P}($ draw a black card $)=\frac{3}{10}=0.3$

4. $\mathrm{P}($ beaver $)=\frac{1}{3} \approx 0.33$

5. $\mathrm{P}($ draw a blue or red marble $)=\frac{16}{21} \approx 0.76$

6. $\mathrm{P}($ not a birthday card $)=\frac{7}{21} \approx 0.33$

7. $\mathrm{P}($ blue $)=\frac{1}{4}=0.25$