$ $$\begin{aligned}& A=\{1,2,3, \ldots, 10\}, \& B=\left\{\frac{m}{n}, nm, m, n \in A, \operatorname{gcd}(m \cdot n)=1\right\}\end{aligned}$$ $ Then no. of elements in $\mathrm{B}=$ ? (22 Jan, Shift I, Memory Based)

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$ $$\begin{aligned}& A=\{1,2,3, \ldots, 10\}, \& B=\left\{\frac{m}{n}, n>m, m, n \in A, \operatorname{gcd}(m \cdot n)=1\right\}\end{aligned}$$ $ Then no. of elements in $\mathrm{B}=$ ? (22 Jan, Shift I, Memory Based)

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\( $$\begin{aligned}& A=\{1,2,3, \ldots, 10\}, \\& B=\left\{\frac{m}{n}, n>m, m, n \in A, \operatorname{gcd}(m \cdot …