please answer questions 2, 3 and 4. thank you

1. Truth Tables and Boolean equations. a. Using NOT () and OR (), write the Boolean equation and truth table for the NAND function. Table 1: NAND Truth Table NAND Boolean Equation: b. Using NOT (), AND (), and OR (D, write the Boolean equation and truth table for the XNOR function. Table 2: XNOR Truth Table XNOR Boolean Equation: Using NOT(~), AND (&), and OR (). write the non-simplified sum-of-products Boolean equation for the truth table given in Table 3 below Table 3: Advanced Circuit c. Advanced Circuit Boolean Equation