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JEE MAIN 2023
08-04-2023 S2
Question
The number of points, where the curve $y=x^5-20 x^3+50 x+2$ crosses the $x$-axis, is $\_\_\_\_$ .
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Solution
Sol. UNIVERSE Vowels: E, I, U Consonants: N, V, R, S $$ \rightarrow{ }^3 \mathrm{C}_2 \times{ }^4 \mathrm{C}_2 \times 4!=3 \times 6 \times 24=432 $$
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