Numbers A number is a mathematical object represent Quantity or Count, measure. We have ten digits, namely 0,1,2,3,4,5,6,7,8,9 called Zero, one, two, three, four, five, six, seven, eight, nine respectively. A number is denoted by a group of digits called numeral . Various Types of Numbers: a. Natural Numbers: Counting numbers are called natural numbers. Thus 1,2,3,4,..... are all natural numbers. b. Whole Numbers: All counting numbers and 0 form the set of whole numbers. ...