a certain city with a population of 132000 is to be divided into 11 voting districts,and no district is to have a population that is more than 10% greater than the population of any other district,what is the minimum possible population that the least populated district could have? A 10700 B 10800 C10900 D11000 E11100 我已经把AB排除了,后面的就不知道了,还请大家帮忙啊!! 还有谁能帮忙解释下 prime factor啊,我做题总错,这是什么意思啊?