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2:23
YouTube
Chukwudi Maths Class
Combination Formula Trick | Fast nCr Method (USA Math Help)
Learn an easy and fast trick to solve combination problems using the nCr formula. This USA-optimized math explanation helps American students understand combinations, factorials, counting methods, and how to apply the formula step-by-step. Perfect for homework, high school math, test prep, probability lessons, and quick USA math practice.
762 views
1 month ago
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