First of all I would like to say hello as I am a new member of this forum. I have a question that I am unable to obtain information on.

I am in a Statistics class and after searching through my book and notes I still can not find the answer to this simple question. Hopefully someone can help me with this.

Question: A box contains 10 items, 2 of which are defective. Two are drawn with replacement.

The question is asking what is the probability of drawing at least one defective.

I'm not looking for JUST an answer, but a formula perhaps that could help me understand and solve similar question of this sort.

Any help would be greatly appreciated!