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''Deal or No Deal'' is the name of several closely related television game shows, the first of which (launching the format) was the Dutch ''Miljoenenjacht'' (''Hunt for Millions'') produced by Dutch producer Endemol. It is played with up to 26 cases (or, in some versions, boxes) containing certain sums of money. The player chooses a case or a box to knock an amount of money off the board. ==Gameplay== The game revolves around the opening of a set of numbered briefcases, each of which contains a different prize (cash or otherwise). The contents (i.e., the values) of all of the cases are known at the start of the game, but the specific location of any prize is unknown. The contestant claims (or is assigned) a case to begin the game. The case's value is not revealed until the conclusion of the game. The contestant then begins choosing cases that are to be removed from play. The amount inside each chosen case is immediately revealed; by process of elimination, the amount revealed cannot be inside the case the contestant initially claimed (or was assigned). Throughout the game, after a predetermined number of cases have been opened, the banker offers the contestant an amount of money and/or prizes to quit the game, the offer based roughly on the amounts remaining in play and the contestant's demeanor, the bank tries to 'buy' the contestant's case for a lower price than what's inside the case. The player then answers the titular question, choosing: * "Deal", accepting the offer presented and ending the game, or * "No Deal", rejecting the offer and continuing the game. This process of removing cases and receiving offers continues, until either the player accepts an offer to 'deal', or all offers have been rejected and the values of all unselected cases are revealed. Should a player end the game by taking a deal, a pseudo-game is continued from that point to see how much the player could have won by remaining in the game. Depending on subsequent choices and offers, it is determined whether or not the contestant made a "good deal", i.e. won more than if the game were allowed to continue. Since the range of possible values is known at the start of each game, how much the banker offers at any given point changes based on what values have been eliminated. To promote suspense and lengthen games, the banker's offer is usually less than the expected value dictated by probability theory, particularly early in the game.〔(Formula for offers in the NBC online version of ''Deal or No Deal'' ) from the personal website of a former physics and finance student〕 Generally, the offers early in the game are very low relative to the values still in play, but near the end of the game approach (or even exceed) the average of the remaining values. Only a few people have ever won the top prize on any version of the show (see table below). For a contestant to win the top prize the player would have to select the case containing the top prize and reject every offer the banker makes during the game. The chances of a player selecting the top prize are reasonable (4–5% depending on how many amounts are in the game). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Deal or No Deal」の詳細全文を読む スポンサード リンク
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