6 / 2/3 = 9
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Brian can serve 6 people.
Oh, dude, let me break it down for you. So, if you have 10 friends sharing 4 medium pizzas, that's like, 4 divided by 10, which equals 0.4 pizzas per friend. And in fraction terms, 0.4 is like, 2/5 of a pizza. So, each friend gets 2/5 of a pizza, which is totally fair... unless someone's secretly hoarding all the pepperoni slices!
To calculate the total number of slices needed, multiply the number of people by the number of slices each person will have: 7 people x 4 slices = 28 slices. Since each pizza has 8 slices, divide the total number of slices needed by the number of slices per pizza: 28 slices / 8 slices per pizza = 3.5 pizzas. Since you cannot order half a pizza, round up to the nearest whole number, so they should order 4 pizzas.
A party. Also 48 pizzas.
There are 7C5 = 7*6/(2*1) = 21 pizzas.