The term 'Vegas Calculations' refers to the mathematical calculations used to determine the ODDS of a particular outcome in a game of chance. This term is often used in reference to gambling in Las Vegas, where the ODDS of winning or losing are calculated in order to determine the house edge. The crossword solution for this term is 'ODDS', which is an acronym for 'ODDS of Definite Success'. This acronym is used to refer to the probability of a certain outcome occurring.