Let’s get started Problem No 1. Solve without calculator: 999 * 999 + 1999 = 999 * 999 + 1000 + (999*1) = 999 (999 + 1 ) + 1000 = 999 (1000) + 1000 = 1000 (999 + 1) = 1000 * 1000 = 1000000 Problem No 2 Solve without calculator: Which number is…