JEE MAIN - Mathematics Hindi (2022 - 25th July Evening Shift - No. 3)

एकेकी आच्छादी फलनों $$f:\{1,3,5,7, \ldots, 99\} \rightarrow\{2,4,6,8, \ldots .100\}$$ जिनके लिए $$f(3) \geq f(9) \geq f(15) \geq f(21) \geq \ldots f(99)$$, हैं, की संख्या है
$${ }^{50} P_{17}$$
$${ }^{50} P_{33}$$
$$33 ! \times 17 !$$
$$\frac{50 !}{2}$$

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