Brain Teasers

Pauldohert said:
Are you googling the answers?
Click to expand...

I had heard this somewhere before and it got stuck in my trivia bank. I also know some others of the type "make the right choice or die", and if I get time I will try to post them.
 
Geez, i'm starting to run out of these.. ok...
Using only basic arithmetic operations (+ - x /) can you get 98 using only 7 sevens? Each 7 may only be used once and you must use all 7 sevens.

7 7 7 7 7 7 7
 
Access_guy49 said:
Geez, i'm starting to run out of these.. ok...
Using only basic arithmetic operations (+ - x /) can you get 98 using only 7 sevens? Each 7 may only be used once and you must use all 7 sevens.

7 7 7 7 7 7 7
Click to expand...

As long as I can also use parentheses, the following should qualify:

( ( ( 7 + 7 ) * 7 ) + ( 7/7 - 7/7 ) ) = 98
 
MSAccessRookie said:
As long as I can also use parentheses, the following should qualify:

( ( ( 7 + 7 ) * 7 ) + ( 7/7 - 7/7 ) ) = 98
Click to expand...

Ya, that worked for me, but different than the answer i was given.. (well slightly different, same basic idea of course)

(7x7x(7+7)/7)+7-7
 
OK this one is likely all over the internet so lets hope people stay off Google.

A lecturer decides to play a fun logic game. She selects 3 students to stand in a row facing the front of the class. The student at the back (C) can see both students in front, The student in the middle (B) can see only the student in front and the student in front A) can't see the other 2 students.

The lecturer shows the students 3 white caps and 2 black caps, and puts them in a bag. The lecturer then blindfolds each student and asks them to select a cap and put it on their heads.
The lecturer then removes their blindfolds and asks the students to solve by logic what color caps they are wearing. (They cannot see the color of their own caps.)

The student in front (A) just laughs, because what chance does he have! They stand like this for a few minutes, none of the students can guess at the color of their caps. And then the student in the front (A) shouts that he knows what color cap he is wearing.

How is this possible?
 
Access_guy49 said:
OK this one is likely all over the internet so lets hope people stay off Google.

A lecturer decides to play a fun logic game. She selects 3 students to stand in a row facing the front of the class. The student at the back (C) can see both students in front, The student in the middle (B) can see only the student in front and the student in front A) can't see the other 2 students.

The lecturer shows the students 3 white caps and 2 black caps, and puts them in a bag. The lecturer then blindfolds each student and asks them to select a cap and put it on their heads.
The lecturer then removes their blindfolds and asks the students to solve by logic what color caps they are wearing. (They cannot see the color of their own caps.)

The student in front (A) just laughs, because what chance does he have! They stand like this for a few minutes, none of the students can guess at the color of their caps. And then the student in the front (A) shouts that he knows what color cap he is wearing.

How is this possible?
Click to expand...

My Guess:


There are only three possibilities regarding what Person A can see.
  1. Two Black Caps
  2. Two white Caps
  3. One Black and One White Cap
Person A:

If Person A saw two Black Caps, it would mean that they had to be wearing a White Cap, so Person A either Sees Two White Caps, or One Black and One White Cap. Person A says nothing.

Person B:

Knows that Person A either Sees Two White Caps, or One Black and One White Cap (for the same reasons). Therefore if Person B saw a Black Cap, they would know that theirs had to be white. Person B also says nothing.

Person C

Knows what the other two know (for the same reasons), and determines that theirs is a White Cap.
 
MSAccessRookie said:
My Guess:


There are only three possibilities regarding what Person A can see.
  1. Two Black Caps
  2. Two white Caps
  3. One Black and One White Cap
Person A:

If Person A saw two Black Caps, it would mean that they had to be wearing a White Cap, so Person A either Sees Two White Caps, or One Black and One White Cap. Person A says nothing.

Person B:

Knows that Person A either Sees Two White Caps, or One Black and One White Cap (for the same reasons). Therefore if Person B saw a Black Cap, they would know that theirs had to be white. Person B also says nothing.

Person C

Knows what the other two know (for the same reasons), and determines that theirs is a White Cap.
Click to expand...

well done. I'm fresh out.
 
One of my fav's (apologies if it's already posted - in fact I might have done it myself in another thread), and a relatively easy one - remember no searching!

What's the next 2 lines in this sequence?:


1
1 1
2 1
1 2 1 1
1 1 1 2 2 1
 
A new one:
What is unique about this sentence:

"I do not know where family doctors acquired illegibly perplexing handwriting nevertheless, extraordinary pharmaceutical intellectuality counterbalancing indecipherability, transcendentalizes intercommunications incomprehensibleness"
 
ChipperT said:
A new one:
What is unique about this sentence:

"I do not know where family doctors acquired illegibly perplexing handwriting nevertheless, extraordinary pharmaceutical intellectuality counterbalancing indecipherability, transcendentalizes intercommunications incomprehensibleness"
Click to expand...

Each word is one letter longer than the previous word?
 
Well, that is true and very close to the answer I am looking for...
 
The number of letters in each word corresponds to what position it is in the sentence?
 
Riddle of the Day


Arnold Schwarzenegger has a big one.
Michael J. Fox has a small one.
Madonna doesn't have one at all.
The Pope has one but doesn't use it.
Clinton uses his all the time.
Bush and Blair are both one.
Mickey Mouse has a very unusual one.
Liberace never used his on a woman.
Jerry Seinfeld is very, very proud of his.
Cher claims that she took on 3.
We never saw Lucy use Desi's. ​

What is it? (Answer will come soon)​
​
 
MSAccessRookie said:
Riddle of the Day


Arnold Schwarzenegger has a big one.
Michael J. Fox has a small one.
Madonna doesn't have one at all.
The Pope has one but doesn't use it.
Clinton uses his all the time.
Bush and Blair are both one.
Mickey Mouse has a very unusual one.
Liberace never used his on a woman.
Jerry Seinfeld is very, very proud of his.
Cher claims that she took on 3.
We never saw Lucy use Desi's. ​

What is it? (Answer will come soon)​
​
Click to expand...

My best guess is middle name? Or dick, though the Cher bit makes that doubtful.
 
MSAccessRookie said:
Riddle of the Day​



Arnold Schwarzenegger has a big one.
Michael J. Fox has a small one.
Madonna doesn't have one at all.
The Pope has one but doesn't use it.
Clinton uses his all the time.
Bush and Blair are both one.
Mickey Mouse has a very unusual one.
Liberace never used his on a woman.
Jerry Seinfeld is very, very proud of his.
Cher claims that she took on 3.
We never saw Lucy use Desi's. ​

What is it? (Answer will come soon)​
Click to expand...
A Surname.
 
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