isi-entrance 2024 Q16

isi-entrance · India · UGA Number Theory GCD, LCM, and Coprimality
Let $n > 1$ be the smallest composite integer that is coprime to $\frac{10000!}{9900!}$. Then
(A) $n \leqslant 100$
(B) $100 < n \leqslant 9900$
(C) $9900 < n \leqslant 10000$
(D) $n > 10000$
Let $n > 1$ be the smallest composite integer that is coprime to $\frac{10000!}{9900!}$. Then\\
(A) $n \leqslant 100$\\
(B) $100 < n \leqslant 9900$\\
(C) $9900 < n \leqslant 10000$\\
(D) $n > 10000$