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charliepatrick
charliepatrick
Joined: Jun 17, 2011
  • Threads: 31
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June 11th, 2017 at 8:56:10 PM permalink
Quote: Wizard

That's a good site. I think that will give me more math problem ammunition for a while.

Yes it's fun. I liked the one about two eggs ...
Quote:

60. There is a building of 100 floors
-If an egg drops from the Nth floor or above it will break.
-If it's dropped from any floor below, it will not break.
You're given 2 eggs.

How do you find N in the minimum number of drops?

beachbumbabs
Administrator
beachbumbabs
Joined: May 21, 2013
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Thanks for this post from:
TheoHuxtable
June 12th, 2017 at 1:15:59 AM permalink
Quote: TheoHuxtable

I was asked this exact question as part of the interview for an entry level casino analyst (bean counter) position by one of the major Strip companies.

Other questions included:
-I give you three identical brown paper bags. One contains only apples, one has only oranges, and one has both apples and oranges. I intentionally mislabeled each bag (ie the bag with only apples is definitely not labeled as "apples only"). You can reach into one bag and pull out one item. After that you must properly label each bag. Which bag do you pull from and why?
-You have 9 cue balls but one of them weighs slightly less than the rest. To be able to determine which is lighter I give you a two-sided scale. What is the least number of scale uses needed to identify the light cue ball with 100% success?
-You have a pistol and sit at a table with two other armed men. Your weapon has a 1/3 chance of successfully firing when you pull the trigger. The man to your right's gun successfully fires 2/3 of the time and the other man's weapon always fires with success. Everyone in the room knows the individual success probabilities for the firearms and they all know that the other men in the room know this as well. You will be first to shoot your gun, then the man to your right has his turn to shoot (if he is still alive), then the other man (if he is still alive). What strategy gives you the greatest chance of survival?

I have no beers to give but folks might find it interesting to see how some of these dreadful bean counters are selected.



The cue ball can be isolated in 2 weighs.

1. Pick six balls.and weigh them, three on each side.
A. If the scale does not balance, you
2. Keep the 3 balls from the higher side, empty the scale, and place any 2 of the balls in it, one each side.
A. If the scale does not balance, the higher side holds the lighter cue ball
B. If the scale balances, the ball you did not weigh is the lighter ine.

1B. If the scale balances, you keep the balls not weighed and empty the scales. Place 2 unweighed balls in the scales, one each side. Proceed as in 2 above.
If the House lost every hand, they wouldn't deal the game.
beachbumbabs
Administrator
beachbumbabs
Joined: May 21, 2013
  • Threads: 99
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Thanks for this post from:
TheoHuxtable
June 12th, 2017 at 1:24:59 AM permalink


3 mislabeled bags. You must reach into the mixed orange and apples bag. Say it is an orange. That bag must be oranges only.

That leaves 2 incorrectly labeled bags, oranges only and apples only. Since the apples only label is wrong, the apples only must be in the bag marked oranges only. That leaves the apples only bag to hold apples and oranges.

The answer is reversed if you pull an apple from the mixed bag.
If the House lost every hand, they wouldn't deal the game.

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