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Find the value (s) of `r` satisfying the equation `"^69 C_(3r-1)-^(69)C_(r^2)=^(69)C_(r^2-1)-^(69)C_(3r)dot`

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Find the value (s) of r satisfying the equation ^69C_(3r-1)-^(69)C_(r^(2))=^(69)C_(r^(2)-1)-^(69)C_(3r)

Number of values of r satisfying the equation ,^69C_(3r-1) -^(69)C_(r^2)=^69C_(r^2-1)-^69C_(3r) is

Number of values of r satisfying the equation ""^(69)C_(3r-1)- ""^(69)C_(r^(2)) = ""^(69)C_(r^(2)-1) - ""^(69)C_(3r) is

The number of values of r satisfying the equation ""^(39)C_(3r-1) -""^(39)C_(r^2) = ""^(39)C_(r^2-1) -""^(39)C_(3r) is

The number of values of 'r' satisfying the equation ""^(39)C_(3r-1)- ""^(39)C_(r^(2) )= ""^(39)C_(r^(2)-1) - ""^(39)C_(3r) is

The number of values of 'r' satisfying the equation ""^(39)C_(3r-1)- ""^(39)C_(r^(2) )= ""^(39)C_(r^(2)-1) - ""^(39)C_(3r) is

The number of values of 'r' satisfying the equation ""^(39)C_(3r-1)- ""^(39)C_(r^(2) )= ""^(39)C_(r^(2)-1) - ""^(39)C_(3r) is

The number of values of r satisfying the equation,39C_(3r-1)-39C_(r^(2))=39C_(r^(2)-1)-39C_(3r) is :