I was a math major and this one is troubling me. I wonder if Brian could come up with the equation and I am sure it will all be so delightfully simple once it is revealed. Once a magician always a magician.
I do not even recognize the symbols used in your equation! How can 1-5 be equal to 2? Is this some kind of witchcraft???? You must have something in error? I think Jennifer's answer spaghetti works well.
The equation is in standard evaluation form. The numerator is 6 The denominator is 1 - (5/7) which is 2/7 (The above line is also (7-5)/7) Evaluated as 6 / (2/7) = 6*7/2 = 21
Remember, multiply and divide left to right before addition and subtraction.
To prevent false solutions the listed numbers can only appear once. 1+1+1..+1 =21 is NOT allowed.
ReplyDeleteThe answer is.... SPAGHETTI!
ReplyDeleteNo really, I have no idea. Must your puzzles be math puzzles?
I was a math major and this one is troubling me. I wonder if Brian could come up with the equation and I am sure it will all be so delightfully simple once it is revealed. Once a magician always a magician.
ReplyDeleteIt has been a week so here is the answer (there may be additional equations involving square routes).
ReplyDelete6/(1-5/7) = 6/(2/7) = 6*7/2 = 42/2 = 21
The square route answer is: 6*7/sqrt(5-1).
This is not considered the correct answer.
I do not even recognize the symbols used in your equation! How can 1-5 be equal to 2? Is this some kind of witchcraft???? You must have something in error? I think Jennifer's answer spaghetti works well.
ReplyDeleteThe equation is in standard evaluation form.
ReplyDeleteThe numerator is 6
The denominator is 1 - (5/7) which is 2/7
(The above line is also (7-5)/7)
Evaluated as 6 / (2/7) = 6*7/2 = 21
Remember, multiply and divide left to right before addition and subtraction.
Thanks. I still like spaghetti for the answer....
ReplyDeleteWell now that I see the answer, it all seems so simple. Post a new puzzle!!!
ReplyDeleteI think you gave me this problem about a year ago. Another puzzle!!11!!1
ReplyDelete