An employee of Company Z is an employee of either Division X or Division Y, but not both. If each division has some part-time employees, is the ratio of the number of full-time employees to the number of part-time employees greater for division X than for company Z?
1) The ratio of the number of full-time employees to the number of part-time employees is less for Division Y than for company Z.
2) More than half of the full-time employees of Company Z are employees of Division X, and more than half of the part-time employees of Company Z are employees of Division Y.
这题选D ,可是我一点思路都没有,谁能解救一下啊……
2、If integer a and n are greater than 1 and the product of the first 8 positive integers is a multiple of a^n. What is the value of a? (1) a^n = 64 (2) n = 6