0- insignificant digit
others 1,2,3,4,5, ... significant digits
Numeral : Group of figures, representing a number is called a numeral
Natural Nos: N = {1,2,3...]
Whole Nos: N = {0,1,2,3...]
Integers: N \ { -3,-2,-1,0,1,2,3, ]
Rational No= When the nos are written in fractions 1/2, 3/4, 8/9 (Where a and b are integers and b is not = 0, eg a/b)
Irrational Nos: When a number cannot be written as a/b eg. sqrt (3) or sqrt(2)
Real No= Rational + Irrational
Comosite No= A number other than 1 which is not prime is a composite number
Even No.
Odd No.
Consecutive Nos= 6,7,8
Prime Numbers= other than 1 is prime if it is divisible by 1 and itself only
Prime numbers upto 100 are (2,3,5,7,11,13,17,19,23,29,31,37,41,43,53,59,61,67,71,73,79,83,89,97)
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