engineering recuitment OSSC Combined Technical Services (ଓଡିଶା) Mock Test 2023-24 Mathematics Permutations and Combinations Combination Function and its properties
If \(\rm \begin{pmatrix} 15\\ 8\end{pmatrix}+\begin{pmatrix} 15\\ 7\end{pmatrix}=\begin{pmatrix} \rm n\\ \rm r\end{pmatrix}\)
then the values of n and r are:
Where, \(\begin{pmatrix} \rm n\\ \rm r\end{pmatrix} = {}^nC_r\)
1
16 and 7.
2
16 and 8.
3
16 and 9.
4
30 and 15.