All 100 targets have a solution.
\(1 = \frac{ \sqrt{576} }{ 4 ! }\)
\(2 = \frac{ 54 }{ 6 } - 7 \)
\(3 = \sqrt{56 - 47 }\)
\(4 = \frac{ 56 }{ 7 } - 4 \)
\(5 = \sqrt{745 - 6 !}\)
\(6 = \frac{ \sqrt{576} }{ 4 }\)
\(7 = 64 - 57 \)
\(8 = \frac{ 5! - 64 }{ 7 }\)
\(9 = 56 - 47 \)
\(10 = \sqrt{\frac{ 54 }{ 6 }} + 7 \)
\(11 = 57 - 46 \)
\(12 = \sqrt{\frac{ 576 }{ 4 }}\)
\(13 = 67 - 54 \)
\(14 = \frac{ 76 }{ 4 } - 5 \)
\(15 = ( 4 + 6 - 7 ) \cdot 5 \)
\(16 = \frac{ 54 }{ 6 } + 7 \)
\(17 = 47 - 5 \cdot 6 \)
\(18 = 65 - 47 \)
\(19 = \frac{ 57 \cdot \sqrt{4} }{ 6 }\)
\(20 = \sqrt{576} - 4 \)
\(21 = \frac{ 56 }{ 4 } + 7 \)
\(22 = 67 - 45 \)
\(23 = \frac{ 46 }{ 7 - 5 }\)
\(24 = \frac{ 576 }{ 4 ! }\)
\(25 = 745 - 6 !\)
\(26 = \sqrt{576} + \sqrt{4 }\)
\(27 = 47 - \frac{ 5! }{ 6 }\)
\(28 = \sqrt{576} + 4 \)
\(29 = 75 - 46 \)
\(30 = \sqrt{75 \cdot \sqrt{4} \cdot 6 }\)
\(31 = 76 - 45 \)
\(32 = 45 - 6 - 7 \)
\(33 = 57 - 4 \cdot 6 \)
\(34 = 754 - 6 !\)
\(35 = \frac{ 56 }{ \sqrt{4} } + 7 \)
\(36 = 47 - 5 - 6 \)
\(37 = 65 - 4 \cdot 7 \)
\(38 = \frac{ 57 \cdot 4 }{ 6 }\)
\(39 = 56 - 4! + 7 \)
\(40 = 5! - 74 - 6 \)
\(41 = 54 - 6 - 7 \)
\(42 = 56 - \sqrt{4} \cdot 7 \)
\(43 = 5 \cdot 7 + \sqrt{64 }\)
\(44 = 45 + 6 - 7 \)
\(45 = ( 7 - 6 ) \cdot 45 \)
\(46 = 45 - 6 + 7 \)
\(47 = ( 6 - 5 ) \cdot 47 \)
\(48 = \sqrt{576 \cdot 4 }\)
\(49 = 57 - \sqrt{64 }\)
\(50 = \frac{ 75 \cdot 4 }{ 6 }\)
\(51 = 75 - 4 \cdot 6 \)
\(52 = 64 - 5 - 7 \)
\(53 = 54 + 6 - 7 \)
\(54 = ( 7 - 6 ) \cdot 54 \)
\(55 = 54 - 6 + 7 \)
\(56 = 76 - 4 \cdot 5 \)
\(57 = \sqrt{57^{6 - 4 }}\)
\(58 = 45 + 6 + 7 \)
\(59 = 56 - 4 + 7 \)
\(60 = \frac{ 6 }{ \sqrt{4} } + 57 \)
\(61 = 56 - \sqrt{4} + 7 \)
\(62 = 64 + 5 - 7 \)
\(63 = \frac{ 54 }{ 6 } \cdot 7 \)
\(64 = ( \frac{ 56 }{ 7 } )^{\sqrt{4 }}\)
\(65 = 57 + \sqrt{64 }\)
\(66 = 64 - 5 + 7 \)
\(67 = 75 - \sqrt{64 }\)
\(68 = 65 - 4 + 7 \)
\(69 = \sqrt{4} \cdot 6 + 57 \)
\(70 = \sqrt{4} \cdot 7 + 56 \)
\(71 = ( 7 - 4 )! + 65 \)
\(72 = \sqrt{\frac{ 6^{7} }{ 54 }}\)
\(73 = 74 + 5 - 6 \)
\(74 = \sqrt{5476 }\)
\(75 = 74 - 5 + 6 \)
\(76 = 64 + 5 + 7 \)
\(77 = 5 \cdot 6 + 47 \)
\(78 = \frac{ 546 }{ 7 }\)
\(79 = 5! - 47 + 6 \)
\(80 = \frac{ 7! - 6! }{ 54 }\)
\(81 = 5 \cdot 7 + 46 \)
\(82 = 65 + 4! - 7 \)
\(83 = \sqrt{64} + 75 \)
\(84 = 4 \cdot 7 + 56 \)
\(85 = 74 + 5 + 6 \)
\(86 = \frac{ 7! }{ 56 } - 4 \)
\(87 = 6 \cdot 7 + 45 \)
\(88 = \frac{ 7! }{ 5! } + 46 \)
\(89 = 5! - 4 \cdot 6 - 7 \)
\(90 = ( 7 - 4 ) \cdot 5 \cdot 6 \)
\(91 = ( \sqrt{64} + 5 ) \cdot 7 \)
\(92 = ( 7 - 5 ) \cdot 46 \)
\(93 = 4 \cdot 7 + 65 \)
\(94 = \frac{ 7! }{ 56 } + 4 \)
\(95 = \frac{ 76 }{ 4 } \cdot 5 \)
\(96 = \sqrt{576} \cdot 4 \)
\(97 = \frac{ 6! }{ 5 } - 47 \)
\(98 = \frac{ 56 }{ 4 } \cdot 7 \)
\(99 = 5 \cdot 7 + 64 \)
\(100 = ( 4 + 6 )^{7 - 5 }\)