For any positive number x, the function [x] denotes the greatest integer less than or equal to x. For example, [1] = 1, [1.267] = 1 and [1.999] = 1. If k is a positive integer such that k^2 is divisible by 45 and 80, what is the units digit of k^3/4000 ?	Pick.
A) 0  B) 0  C) 27  D) 54  E) Cannot be determined
K=[lCM of 80 and 45] * (any integer)   however minimum value of k is sq.rt of 3^2*4^2*5^2 = 60 * any integer   for value of k(60) * any integer unit value will be always zero .   0
<result>B</result>
For any positive number x, the function [x] denotes the greatest integer less than or equal to x. For example, [1] = 1, [1.267] = 1 and [1.999] = 1. If k is a positive integer such that k^2 is divisible by 45 and 80, what is the units digit of k^3/4000 ?