Answer:
3
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Step-by-step explanation:
I think it's 3, but I know that the other is undefined
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You can make 6 different towers. If red was at the bottom, there'd be two different possibilities for that: red, yellow, blue, and red, blue, yellow. Same for if blue was at the bottom: blue, red, yellow, and blue, yellow, red. Yellow also applies: yellow, red, blue, and yellow, blue, red. 3*2=6, so 6 possible towers.
No, 1/18 is the simplest form. :)
Answer:
Your answer is A.
Step-by-step explanation:
Don't need one.
