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Meaning of number 28 Remark
Number of a set nA 31 138
The Natural Numbers
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A X B absolute value are/are asserts associative law assumption basic fraction basic numeral bers binary operation called the law Calvert Elementary School cardinality Cartesian product closed with respect closure law commutative law comparison law contains counting denominator difference disjoint sets distributive law example factors graph identity element is/is lattice law of addition law of equality law of inequality law of multiplication less than/greater multiplicative inverse negative integer number associated number denoted number line number of elements number of set number system one-to-one correspondence operation of addition ordered pairs positive integer preceding frame proper subset quotient rational numbers Recall reflexive law Remark sequence of frames set of integers set of natural set of numbers set of rational statement is called substitution law subtraction symbol symmetric law system of integers system of natural theorem transitive law Venn diagram written