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#41
09-09-2005, 04:44 AM
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Re: Toughest Riddle Ever - see if you can get it
I thought you had to use all the basic math functions.
Who am I kidding, I'd still be working on this when the sun becomes a red giant. 
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#43
09-09-2005, 05:06 AM
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Re: Toughest Riddle Ever - see if you can get it
I was SO close to heading in this direction - but I was trying a few others first -
nh RB
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#44
09-09-2005, 06:45 AM
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Re: Toughest Riddle Ever - see if you can get it
[ QUOTE ]
I feel cheated. I did not know you could use grouping. Isn't that sort of introducing algebraic concepts, when the question implies basic arithmetic only. That expression is equivalent to 3 / 7 * 7 + 3 * 7 when the grouping is expanded. Too many numbers. Maybe I'm just nitpicking because I'm tired. [/ QUOTE ] sometime you have to think outside the box. [img]/images/graemlins/wink.gif[/img]
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#45
09-09-2005, 06:47 AM
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Re: Toughest Riddle Ever - see if you can get it
[ QUOTE ]
I thought you had to use all the basic math functions. Who am I kidding, I'd still be working on this when the sun becomes a red giant. [/ QUOTE ] [ QUOTE ] 4 * 4 + 4 + 4 = 24. [/ QUOTE ] [img]/images/graemlins/smirk.gif[/img]
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#46
09-09-2005, 02:19 PM
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Re: Toughest Riddle Ever - see if you can get it
[ QUOTE ]
[ QUOTE ] I feel cheated. I did not know you could use grouping. Isn't that sort of introducing algebraic concepts, when the question implies basic arithmetic only. That expression is equivalent to 3 / 7 * 7 + 3 * 7 when the grouping is expanded. Too many numbers. Maybe I'm just nitpicking because I'm tired. [/ QUOTE ] sometime you have to think outside the box. [img]/images/graemlins/wink.gif[/img] [/ QUOTE ] Thinking outside the box != violating the rules. 1) use all 4 numbers 2) only 4 basic math functions 3) expression that results in an answer of 24. Your expression relies on a 5th math function -- parenthesis to affect the order of evaluation. Not valid.
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#47
09-09-2005, 02:29 PM
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Re: Toughest Riddle Ever - see if you can get it
[ QUOTE ]
[ QUOTE ] [ QUOTE ] I feel cheated. I did not know you could use grouping. Isn't that sort of introducing algebraic concepts, when the question implies basic arithmetic only. That expression is equivalent to 3 / 7 * 7 + 3 * 7 when the grouping is expanded. Too many numbers. Maybe I'm just nitpicking because I'm tired. [/ QUOTE ] sometime you have to think outside the box. [img]/images/graemlins/wink.gif[/img] [/ QUOTE ] Thinking outside the box != violating the rules. 1) use all 4 numbers 2) only 4 basic math functions 3) expression that results in an answer of 24. Your expression relies on a 5th math function -- parenthesis to affect the order of evaluation. Not valid. [/ QUOTE ] You're not evaluating a long expression; it's simple [censored] arithmetic 3/7 +3 *7 Parenthesis aren't a function. This is the answer. If you want to go around telling yourself that there isn't an answer though, be my guest. Freakin
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#48
09-09-2005, 04:44 PM
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Re: Toughest Riddle Ever - see if you can get it
If you want to drive yourself crazy, try Einstein's riddle that he said 98% of people cannot solve.
There are 5 houses in 5 different colors. In each house lives a person with a different nationality. The 5 owners drink a certain type of beverage, smoke a certain brand of cigar, and keep a certain pet. No owners have the same pet, smoke the same brand of cigar, or drink the same beverage. The question is: Who owns the fish? Hints: The Brit lives in the red house. The Swede keeps dogs as pets. The Dane drinks tea. The green house is on the left of the white house. The green homeowner drinks coffee. The person who smokes Pall Mall rears birds. The owner of the yellow house smokes Dunhill. The man living in the center house drinks milk. The Norwegian lives in the first house. The man who smokes Blend lives next to the one who keeps cats. The man who keeps the horse lives next to the man who smokes Dunhill. The owner who smokes Bluemaster drinks beer. The German smokes prince. The Norwegian lives next to the blue house. The man who smokes Blend has a neighbor who drinks water.
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#49
09-09-2005, 06:46 PM
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Re: Toughest Riddle Ever - see if you can get it
[ QUOTE ]
[ QUOTE ] [ QUOTE ] [ QUOTE ] I feel cheated. I did not know you could use grouping. Isn't that sort of introducing algebraic concepts, when the question implies basic arithmetic only. That expression is equivalent to 3 / 7 * 7 + 3 * 7 when the grouping is expanded. Too many numbers. Maybe I'm just nitpicking because I'm tired. [/ QUOTE ] sometime you have to think outside the box. [img]/images/graemlins/wink.gif[/img] [/ QUOTE ] Thinking outside the box != violating the rules. 1) use all 4 numbers 2) only 4 basic math functions 3) expression that results in an answer of 24. Your expression relies on a 5th math function -- parenthesis to affect the order of evaluation. Not valid. [/ QUOTE ] You're not evaluating a long expression; it's simple [censored] arithmetic 3/7 +3 *7 Parenthesis aren't a function. This is the answer. If you want to go around telling yourself that there isn't an answer though, be my guest. Freakin [/ QUOTE ] You are right it is simple arithmetic... and you are wrong. Please see this 3rd grade primer. http://www.mathgoodies.com/lessons/v...perations.html Now -- tell me how writing 3/7+3*7 comes out as 24. It only happens that way when you include the 5th operator or parenthesis. And if you claim they aren't a seperate operation then why do all math texts tell you that they have their own position in the order of operations? and why do they have such a significant effect on the result of an expression. So -- nyah nyah nyah to you too.
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