Question

Laura has eight different anklets. She wears one on each ankle. How many different ways can she choose two anklets to wear? 20,160 28 15 56

Answer 1

Answer: First option is correct.

Explanation:

Since we have given that

Number of anklets Laura has = 8

She will wears one on each ankle.

We need to find the number of ways that she can choose two anklets to wear.

For this we will use "Fundamental theorem of counting":

Number of different ways she can choose two anklets to wear is given by

`(8!)/(2!)\\\\=(40320)/(2)\\\\=20160`

Hence, First option is correct.

There are 20160 ways to choose two anklets to wear.