Question
How many different signals can be formed using 3 red, 2
green, and 1 yellow flag?Solution
We are given:
- 3 red flags
- 2 green flags
- 1 yellow flag
- 3 red flags ⇒ divide by 3!
- 2 green flags ⇒ divide by 2!
- 1 yellow flag ⇒ no need (1! = 1)
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