Brain Teasers
Mad Ade's Math Teaser
4_4_4_4_4_4_4_4_4 = 2000
Put any mathematical operator in the equation to make the target number of the equation equal to 2000.
The blank spaces are only to separate the 9 fours and not necessarily the positions of the mathematical operators.
Put any mathematical operator in the equation to make the target number of the equation equal to 2000.
The blank spaces are only to separate the 9 fours and not necessarily the positions of the mathematical operators.
Answer
(4 * 4 + 4) * (4 * 4 + 4) * (4 / 4 + 4) = 20 * 20 * 5 = 2000(444 - 44) * (4 * 4 + 4) / 4 = 400 * 5 = 2000
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Comments
An alternative, but not as elegant is: (44*44) +(4*4*4)-4+4
I did (444 + 44 + 4 + 4 + 4) * 4 = 500 * 4 = 200
This is not a good teaser because there are probably hundreds of solutions.
I came up with several in a minute. Here's one:
4^4 * (4+4) - 4*4 - (4+4)*4 = 256 * 8 - 16 - 32
I came up with several in a minute. Here's one:
4^4 * (4+4) - 4*4 - (4+4)*4 = 256 * 8 - 16 - 32
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