Find the number of ways of arranging 5 people in a line?

The number of ways of arranging 5 people in a line can be calculated using the formula for permutations of n objects taken r at a time, which is given by n! / (n-r)!.

In this case, we have 5 people and we want to arrange all of them in a line, so n = 5 and r = 5.

Therefore, the number of ways of arranging 5 people in a line is 5! / (5-5)! = 5! / 0! = 5! = 5 x 4 x 3 x 2 x 1 = 120.

So, there are 120 ways of arranging 5 people in a line.

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