How To Understand Combinations Using Multiplication

Multiplication is a wonderful little operation. Depending on the context, it can

• Scale or stretch a number
• Rotate a vector, without needing sine or cosine

And today we’ll see yet another use: listing combinations.

Revisiting multiplication has a few uses:

• It demystifies other parts of math. The binomial theorem, Boolean algebra (used in computer circuits) and even parts of …
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