4. 5. 6. For every two sets A and B, (AUB)-B = A. There exists an odd integer, the sum of whose digits is odd, and the product of whose digits is even. There exist odd integers x and y such that x ‡ y and 7 1 x² + 3y²

Consider the following. 1 1 -9 02 1 1 -1 -10 Find Av. Av = A = 000 Need Help? Read It 19 Complete the following statement. Since Av ? ✓ 0, v ---Select--- in null(A). | 2

Determine the truth value of each of these statements if the domain consists of all nonzero integers. Give your arguments. a. Vn(n + 1 > n) b. 3x Vy [xy = 1] c. Vx 3y [xy = 1).

pls fill in blanks, thanks