Permutations & Combinations | JEE Main 2025

JEE MAIN 2025

22-01-2025 SHIFT-1

Question

Let $A=\{1,2,3, \ldots, 10\}$ and $B = \left\{ {\frac{m}{n}:m,n \in A,m < n} \right.$ and $\left. {gcd(m,n) = 1} \right\}$. Then $n(B)$ is equal to

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Solution

Question Tags

JEE Main

Mathematics

Hard

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