x different toppings

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x different toppings

by sanju09 » Fri Apr 25, 2014 3:34 am
Beth's pizzeria offers x different toppings. What is the value of x?

(1) There are an equal number of different pizzas that can be made with (x − 2) toppings as there are different pizzas with just 2 toppings.

(2) If the pizzeria were to add one additional topping, the number of different pizzas that could be made with 4 toppings would double.


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by ShortyII » Fri Apr 25, 2014 4:36 am
On 2.) shouldn't the number of combinations triple?