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Suppose you're taking a multiple-choice quiz. One question has three choices. Not knowing the answer, you randomly guess A. The instructor then announces that C is incorrect. Should you switch to B before turning in your paper?

2006-09-22 03:21:52 · 16 answers · asked by Stewie Griffin 4 in Entertainment & Music Jokes & Riddles

16 answers

There is no advantage. Once you know C is incorrect, both A and
B have 50% probability of being correct (from your perspective).

The difference between this and the Monty Hall Problem is that the
teacher has no knowledge of your choice. Hence, the teacher is
equally likely to reveal either of the incorrect responses, regardless
of which option you've selected so far.

2006-09-22 03:39:00 · answer #1 · answered by WhynotaskBert 1 · 2 1

Yes. Because by randomly choosing one of three you have a one in three chance of being right...
Since the instructor knows which answers are wrong he is just telling you one of the wrong answers... so B has a 2 in three chance of being right... assumption is that if you had picked C he would have said either A or B was incorrect...

This was a puzzle years ago called the Let's Make a Deal puzzle based on the three curtains at the end of the show...

2006-09-22 03:25:41 · answer #2 · answered by Andy FF1,2,CrTr,4,5,6,7,8,9,10 5 · 0 0

Why change? You have the same odds of getting it right by keeping the answer A.

2006-09-22 03:24:17 · answer #3 · answered by goldiemcg 3 · 0 0

Well if you think the answer is A and u know that why would u change to B!!!

2006-09-22 03:42:13 · answer #4 · answered by sweetangel1328 3 · 0 1

Leave it alone. You always go with your first instinct.

2006-09-22 04:35:24 · answer #5 · answered by ☺Smiley☺ 5 · 0 0

no
dont like to cheat

2006-09-22 03:30:44 · answer #6 · answered by Hermione 3 · 0 0

Nope... Just go with your instincts.

2006-09-22 03:30:33 · answer #7 · answered by alloy 4 · 0 0

I would, but then again that would be cheating. Depends on your conscience.

2006-09-22 03:24:04 · answer #8 · answered by Mary Smith 6 · 0 0

No, stick with your gut feeling.

2006-09-22 03:25:08 · answer #9 · answered by Stacy H 3 · 0 1

Nope...

2006-09-22 03:24:54 · answer #10 · answered by eastern_mountain_outdoors 4 · 0 1

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