Jee Mains
If the set $\mathrm{R}=\{(\mathrm{a}, \mathrm{b}): \mathrm{a}+5 \mathrm{~b}=42, \mathrm{a}, \mathrm{b} \in \mathrm{N}\}$ has m elements and $\sum_{\mathrm{n}=1}^{\mathrm{m}}\left(1-\mathrm{i}^{\mathrm{n}!}\right)=\mathrm{x}+\mathrm{i}$ y
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