Select the correct statements:
P=112, Q=412, R=121,S=421, T=612
R and S are like fractions
S and T are unlike fractions
Fractions which have the same denominator are called Like fractions.
Fractions that do not have the same denominator are called Unlike fractions.
R and S are like fractions with denominator 21.
P,Q and T are like fractions with denominator 12.
S and T are unlike fractions with different denominators.