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Montano1993 [528]
3 years ago
14

How many ways can 5 people be arranged in a line?

Mathematics
1 answer:
Rasek [7]3 years ago
7 0

Answer: 120 ways

Step-by-step explanation: In this problem, we're asked how many ways can 5 people be arranged in a line.

Let's start by drawing 5 blanks to represent the 5 different positions in the line.

Now, we know that 5 different people can fill the spot in the first position. However, once the first position is filled, only 4 people can fill the second spot and once the second spot is filled, only 3 people can fill the third spot and so on. So we have <u>5</u> <u>4</u> <u>3</u> <u>2</u> <u>1</u>.

Now, based on the counting principle, there are 5 x 4 x 3 x 2 x 1 ways for all 5 spots to be filled.

5 x 4 is 20, 20 x 3 is 60, 60 x 2 is 120, and 120 x 1 is 120.

So there are 120 ways for all 5 spots to be filled which means that there are 120 ways that 5 people can be arranged in a line.

I have also shown my work on the whiteboard in the image attached.

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Table sugar has a molar mass of 342 grams. How many grams of table sugar are needed to make 2.00 liters of a 0.500 M solution?
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Answer:

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Step-by-step explanation:

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Step One

Find the number of moles needed in a solution of the givens.

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