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Math Help - 4 4's Puzzler

  1. #1
    Sheniece
    Guest

    4 4's Problem [Help QUICK!]

    Yeah Okay, I got this question in class and we have to do the four fours question thing from 1-100.
    You use 4 fours, and multiplication, subtraction, division, addition, squareroots and powers[exponents].
    I've gotten to 42 but I can't use the number 44 or 444 Just a 4 by its self. I can use as many operations but only 4 fours.
    Example: (4+4-4)/4=1

    Can I do: [4exp3+(4exp2]+4)/sqrt4=42? AND
    (4exp3+[sqrt4exp3)+sqrt4]/sqrt4=37?
    the [] and () are different brackets.
    And if so, I need help for 43 =/
    [exp = exponent/power]
    [sqrt = squareroot]
    Im a bit confused
    I dont really know where to put the brackets, I just want it to go in order, and not in Order of operations [OOO] Help me figure that too please x]
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  2. #2
    Site Founder Math Help's Avatar
    Joined
    Apr 2005
    Posts
    171

    Lightbulb Four Fours puzzle

    Here's a brain teaser! Can you (with the help of your calculator, as needed) "build" all the whole numbers between 1 and 100 using only four 4's? Use only the + - X / ( ) . ^2 = and 4 keys on your calculator. 4!=4X3X2X1 is allowed, along with repeating decimal 4 (.4~=.4444), also the number 44 is allowed.

    so 4^3 is not allowed.

    37: (4!/4)^2+(4/4)

    42: (4!/.4~)-4^2+4

    43: 44-(4/4)
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  3. #3
    Junior Member
    Joined
    Aug 2005
    Posts
    53

    Many things to look for

    you should really search in google about the 4 4's problem:

    you'll find many ways to solve your problem instead of having just one solution. It will maybe give you ideas...
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