Ts Eamcet
Permutations And Combinations
TS EAMCET 2022 (Online) 20th July Evening Shift
MCQ+1 / -02022
If ${ }^m P_r-{ }^{(m-1)} p_r=a \cdot{ }^{(m-1)} P_s$, then $a-s=$
Ts Eamcet
TS EAMCET 2022 (Online) 20th July Evening Shift
If ${ }^m P_r-{ }^{(m-1)} p_r=a \cdot{ }^{(m-1)} P_s$, then $a-s=$