Question

2. In a psychological experiment, a person must

Answer 1

Answer: There are 120 ways to arrange the shapes

Explanation:

Because there are 5 there are 120.

5x4x3x2x1 = 120

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Answer 2

In order to solve this problem, we would have to use the permutation formula

We have 1 square, 1 cube, 1 circle, 1 pentagon and 1 triangle. So the total number of shapes n = 1+1+1+1+1 = 5

the permutation formula is

$npr=\frac{n!}{(n-r)!}$

we already know that n = 5

r = the number of items that are to be chosen from. This is also 5

When we put these values into the formula we have:

$\frac{5!}{(5-5)!} \\= 5!$

from here we are to find the value of 5!

5! = 5*4*3*2*1 = 120

in conclusion 120 different arrangements are possible.

read more about permutations here: brainly.com/question/23280581?referrer=searchResults