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JEE MAIN - Mathematics Hindi (2021 - 31st August Morning Shift - No. 14)

$$\mathop {\lim }\limits_{x \to 0} {{{{\sin }^2}\left( {\pi {{\cos }^4}x} \right)} \over {{x^4}}}$$ का मान है:
$${\pi ^2}$$
$$2{\pi ^2}$$
$$4{\pi ^2}$$
$$4\pi $$

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