(d) `(0)/(0)` is a rational number.

CLoSURE PROPERTY If (a)/(b) and (c)/(d) are any two rational numbers then (a)/(b)-(c)/(d) is a rational number.

Is (6)/(0) a rational number?

Properties I If (a)/(b) and (c)/(d) are two rational numbers such that (c)/(d)!=0 then (a)/(b)-:(c)/(d) is always a rational number.

Let x be an irrational number.If a,b,c and d are rational numbers such that (ax+b)/(cx+d) is a rational number,which of the following must be true?

Express 0.bar(6) as a rational number.

Express 0.bar(68) as a rational number.

Express 0.2bar(25) as a rational number.

Express 0.bar(123) as a rational number.