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JEE Main 2022 (Online) 25th June Morning Shift

INTEGER+4 / -12022
ধরি \({\alpha _n} = {19^n} - {12^n}\), \(n \in N\) . তবে \({{31{\alpha _9} - {\alpha _{10}}} \over {57{\alpha _8}}}\) এর মান _________ .

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