# How many ways can 4 students be arranged in a row?

To start with, the students are stood off to the side and you have to sit them on the chairs.

In probability, when you have certain numbers of possibilities for a certain number of events, you multiply the numbers of possibilities, so you have

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

- There are 11 qualified applicants for 7 trainee positions in a fast-food management program. How many different groups of trainees can be selected?
- There are 9 students in a club. Three students are to be chosen to be on the entertainment committee. In how many ways can this group be chosen?
- A garden store recently sold 511 seed packets, including 146 pepper seed packets. What is the experimental probability that the next seed packet sold will be a pepper seed packet?
- 20 people shake hands with each other. How many handshakes will be there in total?
- How to find calculate this?

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