Answer: There are 50388 ways to choose.
Explanation:
Since we have given that
Number of vegetables = 8
Number of fruits = 6
Number of cheeses = 6
Number of whole grain breads = 7
Number of items he buys = 15
We need to find the number of ways he wants all 8 vegetables.
So, it becomes,

Hence, there are 50388 ways to choose.