e The set of all odd integers f The set of all real numbers

e. The set of all odd integers. f. The set of all real numbers that have a 4 immediately after the decimal point g. The set of all real numbers whose decimal representations consist of only 1 ?s h. The set of all rational numbers

Solution

(a) (40001,40002,40003,...)

no of element = infinte

uncountable

(b) {1,65,8,3,9}

no of element = 5

countable

(c) phi

no of element =0

countable

(d) {1,2,3,4,5,6,7,8,9}

no of element = 9

countable

(e) {..,-5,-3,1,3,5,..}

no of element = infinite

uncountable

(f)  uncountable

(g)  uncountable

(h)  uncountable