Counting Problems Made Easy! Multiplication Rule & Factorials
How can you count thousands—or even millions—of possibilities without listing them one by one?
In this Fast Track Math lesson, you'll learn two powerful counting tools:
✅ The Multiplication Counting Rule
✅ Factorial Notation (n!)
These concepts are the foundation for:
🎯 Permutations
🎯 Combinations
🎯 Probability
Fast Track Tip:
When a problem has multiple stages, multiply the number of choices at each stage.
And when you're arranging all objects, factorials are usually involved!
Stay tuned for the next lesson in this series:
➡️ Permutations: When Order Matters
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This lesson is part of our counting series:
1️⃣ Multiplication Counting Rule & Factorials ← You are here • Counting Problems Made Easy! Multiplicatio...
2️⃣ Permutations • Permutations Made Easy! When Order Matters
3️⃣ Combinations • Combinations Made Easy! When Order Doesn't...
4️⃣ Permutations vs Combinations • Permutation or Combination Most Students G...
Timestamps:
00:00 Intro
00:27 Multiplication Counting Rule
01:04 Example 1
01:31 Examples 2 & 3
02:24 Factorials
03:27 Example 4
04:06 Example 5
04:41 Example 6
05:25 Challenge Problems
05:54 Challenge Solutions
06:25 Recap
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