Given:
Total number of book = 22
Number of white books = 6
Number of Purple books = 9
Number of green books = 7
To find:
The probability that Warren takes out a green book in both draws (with replacement).
Solution:
We know that,
After replacement, the probability of event remains the same and the independent.
The probability that Warren takes out a green book in both draws is:
Therefore, the correct option is (a).