The number of irrational term s in the expansion of `(x^(2//3)+y^(1//4))^(81)` is ___________

The number of irrational term s in the expansion of `(x^(2//3)+y^(1//4))^(81)` is ___________
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The number of irrational term s in the expansion of `(x^(2//3)+y^(1//4))^(81)` is ___________ A. 70 B. 12 C. 75 D. 13
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