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10 October, 22:53

Which of the problems below could not be answered by using a factorial?

a. The number of ways 20 people can finish in the first three places in a race.

b. How many different kinds of pizzas can be made with 12 optional toppings.

c. How many ways 15 people can arrange themselves in a straight line.

d. How many ways the top 20 hit songs can be arranged from a selection of 500 current single.

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  1. 11 October, 00:25
    0
    The answer is b. but im not too positive. but also i was told my whole life guess b.
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