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Simplify the followings:
 
(i) 2^{\frac{2}{3}} \times 2^{\frac{1}{5}} = iii
 
(ii) (\frac{1}{3}^3)^7 = iii
 
(iii) \frac{11^{\frac{1}{2}}}{11^{\frac{1}{4}}} = iii
 
(iv) 7^{\frac{1}{2}} \times 8^{\frac{1}{2}} = iii