## Aptitude Problems on Numbers Concepts and Formulas## Points to Remember:1. Product of two numbers: 2. Two numbers x and y can be found as: 3. Sum of the digits of a two-digit number is given. If the digits are reversed, the number is decreased by d, in this case, this number 4.If the difference between a two digit number and the number obtained by interchanging the digits is given, the difference of two digits is given by: Aptitude Problems on Numbers Test Paper 1 Aptitude Problems on Numbers Test Paper 2 Aptitude Problems on Numbers Test Paper 3 Aptitude Problems on Numbers Test Paper 4 |