This is not a comprehensive dictionary of mathematical terms, just a quick reference for some of the terms commonly used in this website. More detailed glossaries can be found at http://www.cut-the-knot.org/glossary/atop.shtml and http://thesaurus.maths.org/mmkb/alphabetical.html (among others).
As of 2011, the average salary of a live-in housekeeper was $35,000 to $60,000 a year, according to a survey by the Professional Domestic Services and Institute. Those at the executive level, who supervise at least one other housekeeper, earned anywhere between $40,000 and $65,000 a year. At a minimum, expect to earn almost $14,000 more a year as a live-in than you would living off grounds.
Usually, they would be costly, but on the plus side, they are more efficacious and have a particular code of ethics. According to the exact jobs expected from a maid service, the cost might be approximately $75 per hour or a little more. You will have a group of maidservants and housekeeping professionals coming to your home to carry out cleaning jobs which are mentioned in the contract.