Power of 10

Power of 10 is an international Sony Pictures Television game show format featuring contestants predicting how a cross-section of local people from the host broadcaster's country responded to questions covering a wide variety of topics in polls conducted by the broadcaster and production company.

Rules and gameplay
Two contestants attempt to predict the results of polls in a best-of-five elimination round. A question is read (e.g., "What percentage of Americans said they are afraid of circus clowns?") and the two contestants are given ten seconds to lock in their guess using a dial to select a percentage. If a contestant has not locked in their guess after ten seconds, the computer locks in the percentage on which the contestant's dial rests. The player who comes closest to the actual percentage earns a point. The first player to earn three points advances to the money round to play for the top prize.

In the money round, the contestant is given similar questions and specifies a range of values on a scale from 0% to 100% that they believe includes each correct answer. The size of the range decreases with each question as cash awards increase:

For the first three questions, the correct answer to the question is revealed once the contestant locks in an answer by pulling down a handle or lever. For the £1,000,000 question, the correct answer is only revealed if the actual percentage is outside of the contestant's range. If the contestant correctly answers the £1,000,000 question, they are then given the chance to win £10,000,000 by picking the exact percentage (rounded to the nearest percent) out of that 10% range.

Missing a question ends the game. Contestants who miss either the £1,000 or £10,000 question leave empty-handed. From the $100,000 question onward, missing a question decreases the contestant's winnings "by the power of 10", meaning that he/she leaves with 10% of the money accumulated to that point.

For each question, audience members make exact-percentage guesses in order to show the contestant a full sample of the results for help in answering. Contestants can also ask an in-studio relative or friend to give an opinion before locking in an answer; contestants can also adjust their choice, if necessary, to elicit reactions from the audience or their friend/relative. Contestants can stop the game and take the money that they currently have at any time before locking in an answer.

Unlike most other game shows, the host is not made aware of the correct answers ahead of time, so Carey may help contestants think through questions and offer his own opinions about possible answers.