Fly Away
Math brain teasers require computations to solve.
In the addition sum FLY+FLY+FLY=AWAY, each letter represents a different nonzero digit. What is the value of A+W+A+Y?
HintThey are NONZERO digits.
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Answer
From the ones digits, Y+Y+Y yield Y, and Y must equal 5 (it has been stated as nonzero).
Since A is the highest digit, A is at most 2. However, because 1 is carried from the ones digits to the tens digits, A must equal 2, otherwise L will be 0. A=2 and L=7. The tens digits carry 2 to the hundreds digits, and the hundreds digits must carry 2 to the thousands digits. To avoid zero or duplicate numbers, F can only be 8 and W be 6. A+W+A+Y=2+6+2+5=15.
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Comments
rockstar1234567
Jan 26, 2008
 Good but fly distracts the reader ! 
bookwrmKP
Jan 28, 2008
 This was waaaaaaaaaaaay over my head... 
newton747
Feb 06, 2008
 wow, this is really good. Good job dude. 
Holo
Feb 10, 2008
 Dont get it 
Chura
Jul 08, 2013
 why should a be at most 2 
spikethru4
Jul 09, 2013
 Chura, 3 times a single digit cannot be more than 27. There can not be more than 2 carried forward from the sum of the tens digits.
The sum of F+F+F+carry, which is represented by AW, must range between 3 and 29. Hence A is at most 2. 
Chura
Jul 09, 2013
 thanks spike thru 4 
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