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Four fours

Posted by Rajesh Lal on April 19, 2010 – 3:42 pm

You can make 4 fours equal one like this

1 = 4 / 4 + 4 -4
2 = ?

Can you make a 2? Can you make 3?
See if you can make more.
Can you make 15 at least?


This post is under “Tom” and has 3 respond so far.
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3 Responds so far- Add one»

  1. 1. Stefan Said:

    1= [4]/4+4-4
    2= [4+4]/4+4-4
    3= [4+4+4]/4+4-4
    4= [4+4+4+4]/4+4-4
    5= [4+4+4+4+4]/4+4-4
    6= [4+4+4+4+4+4]/4+4-4
    7= [4+4+4+4+4+4+4]/4+4-4
    8= [4+4+4+4+4+4+4+4]/4+4-4
    9= [4+4+4+4+4+4+4+4+4]/4+4-4
    10= [4+4+4+4+4+4+4+4+4+4]/4+4-4
    11= [4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    12= [4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    13= [4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    14= [4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    15= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    16= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    17= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    18= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    19= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    20= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    21= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    22= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    23= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    24= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    25= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    26= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    27= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    28= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    29= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4
    30= [4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4+4]/4+4-4

  2. 2. Karys Said:

    four fours… xD

  3. 3. DP Said:

    Stefan, you did it wrong.
    2 = 4/4 + 4/4 = (4*4)/(4+4)
    .
    .
    .
    5 = 4!/4 – 4/4
    6 = 4 + (4+4)/4
    7 = 4!/(4+4) + 4
    .
    .
    .
    16 = 4 + 4 + 4 + 4

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