Combinations Made Easy! When Order Doesn't Matter
When does order NOT matter in a counting problem? That's exactly what combinations help us solve.
In this Fast Track Math lesson, you'll learn:
✅ What a combination is
✅ When to use combinations
✅ The combination formula C(n,r)
✅ How factorials are used in combinations
✅ Step-by-step examples
Fast Track Tip:
Ask yourself one question:
Does changing the order create a different outcome?
If the answer is NO, use a combination.
This lesson is part of our counting series:
1️⃣ Multiplication Counting Rule & Factorials • Counting Problems Made Easy! Multiplicatio...
2️⃣ Permutations • Permutations Made Easy! When Order Matters
3️⃣ Combinations ← You are here • Combinations Made Easy! When Order Doesn't...
4️⃣ Permutations vs Combinations • Permutation or Combination Most Students G...
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Timestamps:
00:00 Intro
00:33 What is a combination
01:19 Example 1
02:16 Example 2
03:03 Example 3
03:43 Challenge
04:26 Common Mistakes
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