1. Let A and B be sets with |A| = 10 and |B) = 15. a. What is the largest possible value for |A n B ? b. What is the smallest possible value for |An B| ? 2. For how many three digit numbers (100 to 999) is the sum of the digits even? (For example, 343 has an even sum of digits: 3 + 4 + 3 = 10 which is even.)