+3 Can someone help with these 3?
How many positive integers less than 2000 are of the form x^n for some positive integer x and n>=2
Find the smallest positive integer n such that the product 1999n ends with 888.
Replace each of the boxes with a distinct number from 1,2,3,4,5,6,7,8,9 so that the sum is as close as possible to 1 without being equal to or greater than 1. What is the sum expressed as a common fraction?
\(\frac{\square}{\square} + \frac{\square}{\square}\)
