Let n be the smallest positive integer such that n is divisible by 20, n^{2} is a perfect cube, and n^{3} is a perfect square. What is the number of digits of n ?
Answer Choices
A. 3
B. 4
C. 5
D. 6
E. 7
Let n be the smallest positive integer such that n is divisible by 20, n^{2} is a perfect cube, and n^{3} is a perfect square. What is the number of digits of n ?
Answer Choices
A. 3
B. 4
C. 5
D. 6
E. 7