183k views
0 votes
Jaime had ten posters, but only five could fit on his closet door. How many different ways can he arrange the five posters out of the ten on his closet door?

1 Answer

2 votes

Answer:

There are 252 different ways Jaime can arrange five posters out of his ten on his closet door.

Explanation:

This is a classic example of a combination problem, where we want to choose a certain number of objects from a larger set without regard to their order. In this case, Jaime wants to choose 5 posters out of the 10 he has, and the order in which he puts them on his door doesn't matter.

The formula for the number of combinations of n objects taken r at a time is:

nCr = n! / (r! * (n-r)!)

where n is the total number of items, r is the number of items we want to choose, and ! means factorial, which is the product of all positive integers up to that number. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.

Using this formula, we can find the number of ways Jaime can choose 5 posters out of his 10:

10C5 = 10! / (5! * (10-5)!)

= (10 * 9 * 8 * 7 * 6) / (5 * 4 * 3 * 2 * 1)

= 252

So, there are 252 different ways Jaime can arrange five posters out of his ten on his closet door.

User Maggu
by
6.8k points