Mathematics · 2022
JEE Main · 25 July 2022, Shift 2 · Q3
The number of bijective functions f:{1,3,5,7, …, 99} →{2,4,6,8, …., 100}, such that f(3) ≥ f(9) ≥ f(15) ≥ f(21) ≥ … ≥ f(99), is \ \ \ \
The number of bijective functions $\displaystyle f:\{1,3,5,7, \ldots, 99\} \rightarrow\{2,4,6,8, \ldots ., 100\}$, such that $\displaystyle f(3) \geq f(9) \geq f(15) \geq f(21) \geq \ldots \geq f(99)$, is \_\_\_\_
Official answer
(2)
$\displaystyle { }^{50} P_{33}$
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JEE Main 2022 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.