Each week Manhattan GMAT posts a GMAT question on our blog and follows up with the answer the next day. Are you up for the challenge?
If x is positive and not equal to 1, then the product of x1/n for all positive integers n such that 21 ≤ n ≤ 30 is between
(A) 1 and x1/6
(B) x1/6 and x1/3
(C) x1/3 and x1/2
(D) x1/2 and x2/3
(E) x2/3 and x5/6