If $ n $ is the number of irrational terms in the expansion of $ \left(3^{1 / 4}+5^{1 / 8}\right)^{60} $, then $ (n-1) $ is divisible by: [JEE Main 2021, 16 Mar (Shift 1)]

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If \( n \) is the number of irrational terms in the expansion of \( \left(3^{1 / 4}+5^{1 / 8}\right)^{60} \), then \( (n…

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