mishrapratima

NATURAL NUMBERS The numbers 1, 2, 3, 4…. Are called natural numbers, their set is denoted by N. Thus N = {1, 2, 3, 4, 5….} WHOLE NUMBERS The numbers 0, 1, 2, 3, 4…… Are called whole numbers, their set is denoted by W. Thus W = {0, 1, 2, 3, 4….} INTEGERS The numbers. …– 3, –2, –1, 0, 1, 2, 3….are called integers and their set is denoted by I & Z Ø Set of positive integers denoted by I+ and consists of {1, 2, 3…}, also known as set of natural numbers. Ø Set of negative integers denoted by I– and consists of {…– 3, – 2, – 1} Ø Set of non-negative integers is {0,1,2, 3…} also known as set of whole numbers Ø Set of non-positive integers is {…– 3, – 2, – 1, 0}