Actually, you MEANT to ask, "how long do they get to QUESTION the ANSWER",
and the answer is 5 seconds. If you notice, when a contestant buzzes in,
there are 9 lights that light up on the top of the podium, above the
score readout. It is 5 seconds and if the lights run out before they
respond, then they LOSE! For Daily Doubles, they can vary from my
experience in watching the show. Usually no more then 10 seconds approx.
If it is an Audio DD, then they may get longer for listening purposes! I
hope this answers your questions! Good questions!!
Bill