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| Solutions to the First Challenge: 0 to 19 | | Number | Four Fours Term | Solved By | | 0 | 4 - 4 + 4 - 4 | johnv | | 1 | (4/4) / (4/4) | johnv | | 2 | 4/4 + 4/4 | pilot | | 3 | (4+4+4) / 4 | pilot | | 4 | [ (4/4) ^4 ] * 4 | catbells | | 5 | [ 4*4 +4 ] / 4 | pilot | | 6 | [ (4+4) /4 ] +4 | scruffy | | 7 | 4+4 - (4/4) | Flora Flatbelly | | 8 | 4*4 - 4 - 4 | catbells | | 9 | 4/4 +4 +4 | scruffy | | 10 | 4 + √4 + √4 + √4 | P Rubie | | 11 | 44 / (√4 + √4) | christina | | 12 | 4 + 4 + √4 + √4 | johnv | | 13 | 4!/(√4) + 4/4 | tackline | | 14 | 4+4+4 + √4 | D12Bit | | 15 | (44/4)+4 | D12Bit | | 16 | 4*4*4 / 4 | D12Bit | | 17 | 4*4 + 4/4 | D12Bit | | 18 | 4*4 + 4 / √4 | D12Bit | | 19 | 4! - 4 - 4/4 | ? |
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| Solutions to the Second Challenge: 20 to 99 | | Number | Four Fours Term | Solved By | | 20 | 4 * 4 + √4 + √4 | | | 21 | 4! - 4 + 4/4 | | | 22 | 4! - (4! / 4 - 4) | | | 23 | 4! - 4^(4-4) | | | 24 | 4 * ( 4 + 4/√4 ) | | | 25 | 4! + 4^(4-4) | | | 26 | 4! + (4! / 4 + 4) | | | 27 | 4! + 4 - 4/4 | | | 28 | 4! + 4 * (4/4) | | | 29 | 4! + 4 + 4/4 | | | 30 | (4 + 4/4)! / 4 | | | 31 | (4! + 4)/4 +4! | MicheleR | | 32 | 4*4 + 4*4 | | | 33 | (4 - .4)/.4 + 4! | IceMantis | | 34 | 4*4 * √4 + √ | | | 35 | 4! + 44/4 | | | 36 | 4*4 * √4 + 4 | | | 37 | 4! + (4! + √4) / √4 | christina | | 38 | 44 - 4 - √4 | | | [39] | 4! + 4! - 4/.4~ | | | 40 | 44 - √4 - √ | | | 41 | (4*4 + .4) / .4 | | | 42 | 44 - 4/√4 | | | 43 | 44 - 4/4 | | | 44 | 44 + 4 - 4 | | | 45 | 44 + 4/4 | | | 46 | 44 + 4/√4 | | | 47 | 4! + 4! - 4/4 | | | 48 | 44 + √4 + √4 | | | 49 | 4! + 4! + 4/4 | | | 50 | 44 + 4! / 4 | | 51 | (4! - 4 + .4) / .4 | Mr.B | | 52 | 44 + 4 + 4 | | | [53] | 44 + 4 / .4~ | | | 54 | 4! + 4! + (4! / 4) | | | 55 | [4! - ( 4 / √4 ) ] | IceMantis | | 56 | 44 + 4! / √4 | | | [57] | 4! + 4! + 4/.4~ | | | 58 | 4! + 4! + 4/.4 | IceMantis | | 59 | 4!/.4 - 4/4 | FireMantis | | 60 | 44 + 4 * 4 | | | 61 | 4!/.4 + 4/4 | FireMantis | | 62 | (4 + 4) ^ √4 - √4 | | | 63 | (4! + √4) / .4 - √4 | FireMantis | | 64 | 4 * 4 * √4 * √4 | | | 65 | (4^4 +4) / 4 | Jeremy | | 66 | (4 + 4) ^ [√4] + √4 | | | 67 | [4! + √4] / .4 + √4 | FireMantis | | 68 | (4 + 4) ^ √4 + 4 | | | 69 | (4!+4-.4)/.4 | Partick | | 70 | 44 + 4! + √4 | FireMantis | | 71 | (4 + 4! + .4) / .4 | IceMantis | | 72 | [ (4! / 4) ^ √4 ] * √4 | | | [73] | [4! * √4 + √.4~)] / √.4~) | capOCC | | 74 | 4! + 4! + 4! + √4 | FireMantis | | 75 | (4! + √4 + 4) / .4 | FireMantis | | 76 | 4!*4 - 4! + 4 | Jeremy | | [77] | (4/.4~) ^ √4 - 4 | FireMantis | | 78 | √4 / .4~) * [4! + √4] | ArBeeJay Ruakura | | 79 | (4/.4~) ^ √4 - √4 | | | 80 | 4! * 4 - 4*4 | - | | [81] | (4/.4~) * (4/.4~) | - | | 82 | (4! / .4) + 4! - √4 | Partick | | [83] | (4/.4~) ^ √4 + √4 | - | | 84 | 4! * 4 - 4! / √4 | - | | [85] | (4/.4~) ^ √4 + 4 | - | | 86 | 4!*4 - 4/.4 | IceMantis | | 87 | 4! * 4 - 4/.4~ | - | | 88 | 4! * 4 - 4 - 4 | - | | 89 | 4! + [4! + √4]/.4 | RyVikOCC | | 90 | 4! * 4 - 4! / 4 | - | | 91 | 4 * 4! - (√4 / .4) | IceMantis | | 92 | 4! * 4 - √4*4) | - | | [93] | 4 * 4! - [ √4 / √(.4~) ] | IceMantis | | 94 | 4! * 4 - 4/√4 | - | | 95 | 4! * 4 - 4/4 | - | | 96 | 4! * 4 + 4 - 4 | - | | 97 | 4! * 4 + 4/4 | - | | 98 | 4! * 4 + 4/√4 | - | | [99] | (4!*√4-4) / .4~ | IceMantis |
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