T&M is Time and Materials.
ORDER OF MAGNITUDE is a number assigned to the ratio of two quantities; two quantities are of the same order of magnitude if one is less than 10 times as large as the other; the number of magnitudes that the quantities differ is specified to within a power of 10.
MANAGEMENT REPRESENTATION LETTER is a letter addressed to the auditor, signed by the client's chief executive officer and chief financial officer. During an audit, management makes many representations to the auditor. Written representations from management in the letter confirm oral representations given to the auditor, document the continuing appropriateness of such representations, and reduce the possibility of misunderstanding.
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