All 100 targets have a solution.
\(1 = 43 - 6 \cdot 7 \)
\(2 = \frac{ 36 }{ 4 } - 7 \)
\(3 = \sqrt{46 - 37 }\)
\(4 = \sqrt{63 - 47 }\)
\(5 = \frac{ 63 }{ 7 } - 4 \)
\(6 = \frac{ 43 - 7 }{ 6 }\)
\(7 = \frac{ 43 + 6 }{ 7 }\)
\(8 = 6 \cdot 7 - 34 \)
\(9 = 46 - 37 \)
\(10 = \sqrt{\frac{ 36 }{ 4 }} + 7 \)
\(11 = 47 - 36 \)
\(12 = \frac{ 36 }{ 7 - 4 }\)
\(13 = 37 - 4 \cdot 6 \)
\(14 = 734 - 6 !\)
\(15 = 4! - \frac{ 63 }{ 7 }\)
\(16 = 63 - 47 \)
\(17 = \sqrt{36} + 4 + 7 \)
\(18 = ( 7 - 4 ) \cdot \sqrt{36 }\)
\(19 = \frac{ 64 - 7 }{ 3 }\)
\(20 = \sqrt{376 + 4 !}\)
\(21 = 34 - 6 - 7 \)
\(22 = \frac{ 76 }{ 4 } + 3 \)
\(23 = 743 - 6 !\)
\(24 = 67 - 43 \)
\(25 = 36 - 4 - 7 \)
\(26 = 746 - 3 !!\)
\(27 = 64 - 37 \)
\(28 = \frac{ 63 - 7 }{ \sqrt{4 } }\)
\(29 = 37 - \sqrt{64 }\)
\(30 = 43 - 6 - 7 \)
\(31 = \sqrt{36} \cdot 4 + 7 \)
\(32 = 63 - 4! - 7 \)
\(33 = 67 - 34 \)
\(34 = ( 7 - 6 ) \cdot 34 \)
\(35 = 34 - 6 + 7 \)
\(36 = 46 - 3 - 7 \)
\(37 = \frac{ 74 \cdot 3 }{ 6 }\)
\(38 = 74 - 36 \)
\(39 = 36 - 4 + 7 \)
\(40 = \frac{ 6 }{ \sqrt{4} } + 37 \)
\(41 = 47 - \sqrt{36 }\)
\(42 = 76 - 34 \)
\(43 = ( 7 - 6 ) \cdot 43 \)
\(44 = 43 - 6 + 7 \)
\(45 = 37 + \sqrt{64 }\)
\(46 = 3!! - 674 \)
\(47 = 34 + 6 + 7 \)
\(48 = \sqrt{7 - 3} + 46 \)
\(49 = \frac{ 6 }{ 3 } + 47 \)
\(50 = 46 - 3 + 7 \)
\(51 = 64 - 3! - 7 \)
\(52 = \frac{ 364 }{ 7 }\)
\(53 = \sqrt{36} + 47 \)
\(54 = 64 - 3 - 7 \)
\(55 = 67 - 3 \cdot 4 \)
\(56 = 43 + 6 + 7 \)
\(57 = \frac{ 76 \cdot 3 }{ 4 }\)
\(58 = ( 36 - 7 ) \cdot \sqrt{4 }\)
\(59 = 46 + 3! + 7 \)
\(60 = 63 + 4 - 7 \)
\(61 = 4 \cdot 6 + 37 \)
\(62 = ( 37 - 6 ) \cdot \sqrt{4 }\)
\(63 = \frac{ 36 }{ 4 } \cdot 7 \)
\(64 = 4 \cdot 7 + 36 \)
\(65 = 73 - \sqrt{64 }\)
\(66 = 63 - 4 + 7 \)
\(67 = 3 \cdot 7 + 46 \)
\(68 = 74 - \sqrt{36 }\)
\(69 = 76 - 3 - 4 \)
\(70 = ( \sqrt{36} + 4 ) \cdot 7 \)
\(71 = 73 + 4 - 6 \)
\(72 = 74 - \frac{ 6 }{ 3 }\)
\(73 = 3!! - 647 \)
\(74 = ( 6 - 4 ) \cdot 37 \)
\(75 = 73 - 4 + 6 \)
\(76 = 6 \cdot 7 + 34 \)
\(77 = 74 - 3 + 6 \)
\(78 = ( 37 - 4! ) \cdot 6 \)
\(79 = 3 \cdot 4 + 67 \)
\(80 = \sqrt{36} + 74 \)
\(81 = \sqrt{64} + 73 \)
\(82 = 3 \cdot \sqrt{4} + 76 \)
\(83 = 36 + 47 \)
\(84 = \sqrt{36 \cdot 4} \cdot 7 \)
\(85 = 6 \cdot 7 + 43 \)
\(86 = ( 36 + 7 ) \cdot \sqrt{4 }\)
\(87 = ( 4! + 7 ) \cdot 3 - 6 \)
\(88 = 3 \cdot 4 + 76 \)
\(89 = \frac{ 6! }{ 3! } - 4! - 7 \)
\(90 = 3 \cdot 4 \cdot 7 + 6 \)
\(91 = 4 \cdot 7 + 63 \)
\(92 = 3 \cdot 6 + 74 \)
\(93 = ( 4 \cdot 6 + 7 ) \cdot 3 \)
\(94 = \frac{ 376 }{ 4 }\)
\(95 = \sqrt{\frac{ 3! }{ 6 } + 7!} + 4 !\)
\(96 = ( 7 - 3 ) \cdot 4 \cdot 6 \)
\(97 = 4 \cdot 6 + 73 \)
\(98 = \frac{ 6! - 34 }{ 7 }\)
\(99 = ( 3 + 6 ) \cdot ( 4 + 7 )\)
\(100 = 3! \cdot 4 + 76 \)