no
They have had a few and will again. Travel to Jeopardy to audition is at a person's own expense.
It can happen, depending on the show. For example, on The Price is Right, you can be on the show again after 10 years, and there have been contestants who have appeared on the show twice. On the other side of the spectrum, there was a contestant on Jeopardy! who appeared twice, and had his winnings withheld due to the show's rules saying that you can't appear again if you've already appeared once on the current version of the show (note that contestants that have appeared on the Art Fleming version of the show can appear again on the current version, and it's happened before).
It means the same digit or group of digits keeps appearing again and again and again and . . . . .
100%
The winner keeps the winnings and comes back to play again. Second place pays $2000 and third $1000
Double jeopardy is a procedural defence that forbids a defendant from being tried again on the same (or similar) charges following a legitimate acquittal.
Double jeopardy means that a person cannot be put on trial again for the same crime if he was already acquitted once.
Double Jeopardy Clause
to treat some ting again
Because he had been acquitted of the murder, the rule of double jeopardy meant he could not be tried again for the crime. Expecting that double jeopardy would apply, the burglar confessed, and was then convicted for a dozen of his other robberies.
Double Jeopardy
The Babe Road is about taking a junk car and making it actually run again. Contestants then try and drive them across country before they break down again.