There are times when you should request copies of your records: 1  Permanent Change of Station. 2  Deploying. 3  Retiring.
0. EXPERT ANSWER. Double coincidence of wants refers to a situation in a barter system where the goods or services offered by a seller are exactly the same as that required by a buyer and vice versa.
In basketball, a double is the accumulation of a double-digit number total in one of five statistical categoriesâpoints, rebounds, assists, steals, and blocked shotsâin a game.