by dagreatbroomhead on Sat Jul 01, 2006 3:39 pm
HINT: you have to remeber your geomerty proofs #81 Three cards, each with a positive integer written on it, are lying face-down on a table.
Jennifer, Brian, and Ed are told that:
a) the numbers are all different
b) they sum to 13, and
c) they are in increasing order, left to right
First, Jennifer looks at the number on the leftmost card and says, "I dont have enough information to determine the other two numbers."
Then, Ed looks at the number on the rightmost card and says, "I dont have enough information to determine the other two numbers."
Finally, Brian looks at the number on the middle card and says, "I dont have enough information to determine the other two numbers."
The three people are perfect logicians and always tell the truth, and know that they are all perfect logicans and always tell the truth. They all hear what the others are saying.
What is the number on the middle card?(7 points)
#85 What name has three "A"s in it where each has a different sound?(4) Adriana is not what i was looking for, but points still, question still open,
HINT: it was an american hero
#88 After each day, you get one less than twice as many dollars as you got the day before. You get one dollar on March 26, so how many dollars did you get on March 21?(4)
#89 Five men are standing in a circle. They know they are wearing at least 2 white hats and at least 2 black hats. They do not know what color hat they are wearing. If the men use logic, how many of them will figure out what color their hat is, if nobody says anything?(5)
#90 If 3 men can eat 3 steaks in 3 days, how many steaks can 6 men eat in 6 days?(5)
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#86 If a rooster is perched on the top of a barn with the barn roof sloping east and west, and just as the sun rises the rooster lays an egg, on which side of the barn will the egg roll?(4) rooster don't lay eggs - Mr dex.
#84 Write a 10-digit number. The first digit tells how many zeroes there are in the number. The second digit tells how many ones that are in the number. The third digit tells how many twos there are in the number, and so on. The last number tells how many nines there are in the number. What is this number?(7) is 6 2 1 0 0 0 1 0 0 0. - onbekende
#87 Four people are suspected of stealing a diamond from a museum. If one of their statements are true, and one is false, who is the thief?
Bo said: It was Bo. It wasn't Roman.
Roman said: It was Kate. It wasn't Bo.
John said: It was Roman. It wasn't Kate.
Kate said: It was John. It was Bo.
(4)
john - mr dex