A red container contains 7 items of which 2 are new and 5 are old items. A purple container contains 4 items of which 1 is new and 3 are old items. An item is drawn at random from each box. 1. What is the probability that both items are old items?
- What is the probability that one item is new and one item old?
- What is the probability that one item is new and one item old?
1 Answer
Mar 13, 2018
Two old items:
One old item:
Explanation:
The draw from the red container for an old item has a probability of
The draw from the purple container for an old item has a probability of
This means that there is a
For finding where one item is old, we can look at the probability of the old item being drawn from the red container and a new item from the purple container
