MathematicsEasy98×since 2002Q4828If a, b and c are the greatest value of ¹⁹C_p, ²⁰C_q and ²¹C_r respectively, then :Aa11=b22=c21{a \over {11}} = {b \over {22}} = {c \over {21}}11a=22b=21cBa10=b22=c21{a \over {10}} = {b \over {22}} = {c \over {21}}10a=22b=21cCa10=b11=c42{a \over {10}} = {b \over {11}} = {c \over {42}}10a=11b=42cDa11=b22=c42{a \over {11}} = {b \over {22}} = {c \over {42}}11a=22b=42cCheck answerSkip