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Help on math challenge1B(c) amc8/mathcounts winter 2017-2018 counting and probability

 
 
ZongWeston的头像
Help on math challenge1B(c) amc8/mathcounts winter 2017-2018 counting and probability
ZongWeston - 2018年01月15日 Monday 09:01
 

for 5.23 A and B, It says they cannot share multiple toppings, does that mean they can or cannot share 1 topping?


 
ReynosoDavid的头像
Re: Help on math challenge1B(c) amc8/mathcounts winter 2017-2018 counting and probability
ReynosoDavid - 2018年01月16日 Tuesday 10:13
 

On part (a) the pizza must have 3 different toppings. On part (b) the pizza must have 3 toppings, but it is fine if they are repeated (say chicken, more chicken, and onions).

 
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ZongWeston的头像
Re: Help on math challenge1B(c) amc8/mathcounts winter 2017-2018 counting and probability
ZongWeston - 2018年01月16日 Tuesday 16:24
 

I meant that can the two pizzas share one topping? Not if you can repeat topping on the same pizza.

 
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Re: Help on math challenge1B(c) amc8/mathcounts winter 2017-2018 counting and probability
ReynosoDavid - 2018年01月17日 Wednesday 10:00
 

The pizzas from part (a) and part (b) are independent, so yes, you could repeat toppings. In each part you want to figure out how many ways to select the toppings of one pizza.

 
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