To fill 12 vacancies there are 25 candidates of which five are from scheduled caste. If 3 of the vacancies are reserved for scheduled caste candidates while the rest are open to all, then the number of ways in which the selection can be made [RPET 1981]

\[^{22}{{C}_{9}}{{-}^{5}}{{C}_{3}}\]

\[^{5}{{C}_{3}}{{\times }^{22}}{{C}_{9}}\]

\[^{22}{{C}_{3}}{{+}^{5}}{{C}_{3}}\]

To fill 12 vacancies there are 25 candidates of which five are from sc

1.	To fill 12 vacancies there are 25 candidates of which five are from scheduled caste. If 3 of the vacancies are reserved for scheduled caste candidates while the rest are open to all, then the number of ways in which the selection can be made [RPET 1981]
A.	\[^{5}{{C}_{3}}{{\times }^{22}}{{C}_{9}}\]
B.	\[^{22}{{C}_{9}}{{-}^{5}}{{C}_{3}}\]
C.	\[^{22}{{C}_{3}}{{+}^{5}}{{C}_{3}}\]
D.	None of these
Answer» B. \[^{22}{{C}_{9}}{{-}^{5}}{{C}_{3}}\]

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To fill 12 vacancies there are 25 candidates of which five are from scheduled caste. If 3 of the vacancies are reserved for scheduled caste candidates while the rest are open to all, then the number of ways in which the selection can be made [RPET 1981]

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