Reduce the Boolean expression X·Y + X·Y′ using the laws of Boolean algebra.

Simplify the Boolean expression (X + Y)(X + Y′).

State the complement law and the idempotent law of Boolean algebra.

State and prove De Morgan's two theorems using a truth table.

Write the dual of the expression X + (Y · Z) and state what the principle of duality says.

Distinguish between the canonical SOP and POS forms of a Boolean expression.

What is the output of: String s = "Examination"; System.out.println(s.length() + " " + s.substring(0, 4) + " " + s.toUpperCase().charAt(2));