Answer
(a) 1
(b) 1
(c) -13, 1, -6
(d) 2.01, 0.666..., 1
(e) 0.01011011
Work Step by Step
(a) 1 is a whole number as it has no fractional component - the whole number set includes 0.
(b) 1 is a natural number as it has no fractional component.
(c) Integers are all whole numbers with their negative counterparts - which hence includes the positive '1' and the two negative whole numbers '-13' and '-6'.
(d) Rational numbers are those which can be expressed as a fraction. 2.01 can be expressed as \frac{201}{100}, 0.666... as \frac{2}{3}, and 1 as \frac{1}{1}.
(e) Irrational numbers are those which cannot be expressed as fractions and are not whole numbers - they have decimal values. Hence, 0.01011011 is irrational as it can't be expressed as a fraction.
