Question

Hello can you please help me posted picture of question

Answer 1

Choosing 3 mice means making a combination of 3 mice from a group of 9 mice.

So, we need to calculate the number of combinations of 9 objects taken 3 at a time which can be written as 9C3.

9C3 = 84

So, Dana can choose 3 white mice in 84 different ways.

therefore, the correct option is A