Please help and please read carefully on two. I appreciate it so much.

1. Given the following definitions: U = {1! 2! 3! 4! 5! 6! 7} A={1, 2, 4, 5} B= {1, 3, 5,7} How many elements are in An B? 2. Given the following definitions: U = {a, b, c, d, e, f, g} A= {a, c, e, g} B = {a, b, c, d} Find 8' Answer in roster form, with a single space after each comma. 3. Given the following definitions: U ={152l3l4155657} A: {1, 2. 4, 5} B = {1! 3! 5! 7} How many elements are in A u B? 4. Given the following definitions: U = {1, 2, 3, 4, 5, 6, 7} A: {1, 2, 4, 5} B = {1, 3, 5, 7} How many elements are in An 8'? 5. Given the following definitions: U = {1! 2! 3! 4! 5! 6! 7} A= {1, 2, 4, 5} B = {1, 3,5} How manv elements are in A u B