Probability & Combinatorics
Lesson 3 of 3 6 min +40 XP

Independent Events

Multiply chances that don't affect each other.

What you'll learn

  • Understand independent events
  • Apply it to real examples
  • Check yourself with a quiz
Two coins at once

Flip two coins: getting heads on both is ½ × ½ = ¼, because one flip can't influence the other. Independent events multiply.

The multiplication rule

For independent events, P(A and B) = P(A) × P(B).

Knowledge Check

+10 XP / correct

1. P(two heads on two coins)?

2. Independent events' joint probability is found by…