There is an infinite number of examples. One of them is 1 2/3 + 3 1/3.
Yes
Whole numbers can't be mixed numbers.
You don't. Mixed numbers and whole numbers are separate things.
Mixed numbers usually become improper fractions, not whole numbers.
22 is a whole number. Whole numbers can't be mixed numbers.
No, they are not.
Mixed number are rational numbers because they both have a whole number.
You can't. 35 is a whole number, and mixed numbers are not whole.
mixed numbers
whole
You cannot. Mixed number and whole numbers form disjoint sets.
No, because then it would not be a mixed number.