All 100 targets have a solution.
\(1 = 6 - \frac{ 45 }{ 9 }\)
\(2 = \sqrt{\sqrt{65 - 49 }}\)
\(3 = \frac{ 45 }{ 6 + 9 }\)
\(4 = \sqrt{65 - 49 }\)
\(5 = 64 - 59 \)
\(6 = \frac{ 45 - 9 }{ 6 }\)
\(7 = 56 - 49 \)
\(8 = \frac{ 56 }{ \sqrt{49 } }\)
\(9 = \frac{ 45 + 9 }{ 6 }\)
\(10 = ( 5 - 4 )^{6} + 9 \)
\(11 = \frac{ 45 }{ 9 } + 6 \)
\(12 = \frac{ 54 }{ 9 } + 6 \)
\(13 = 59 - 46 \)
\(14 = \frac{ 65 - 9 }{ 4 }\)
\(15 = 69 - 54 \)
\(16 = 65 - 49 \)
\(17 = \frac{ 45 + 6 }{ \sqrt{9 } }\)
\(18 = \frac{ 54 }{ 6 } + 9 \)
\(19 = 49 - 5 \cdot 6 \)
\(20 = 56 - 4 \cdot 9 \)
\(21 = \frac{ 45 }{ \sqrt{9} } + 6 \)
\(22 = 46 - ( 9 - 5 )!\)
\(23 = \frac{ 56 }{ 4 } + 9 \)
\(24 = 69 - 45 \)
\(25 = \frac{ 6! }{ 45 } + 9 \)
\(26 = \frac{ 6! }{ 9 } - 54 \)
\(27 = 45 - 6 \cdot \sqrt{9 }\)
\(28 = \frac{ 65 - 9 }{ \sqrt{4 } }\)
\(29 = 94 - 65 \)
\(30 = 45 - 6 - 9 \)
\(31 = 95 - 64 \)
\(32 = 46 - 5 - 9 \)
\(33 = 45 - 6 - \sqrt{9 }!\)
\(34 = 5^{6 - 4} + 9 \)
\(35 = 59 - 4 \cdot 6 \)
\(36 = \frac{ 54 \cdot 6 }{ 9 }\)
\(37 = \sqrt{49} \cdot 6 - 5 \)
\(38 = 94 - 56 \)
\(39 = 54 - 6 - 9 \)
\(40 = 64 - ( 9 - 5 )!\)
\(41 = \sqrt{49} \cdot 5 + 6 \)
\(42 = 96 - 54 \)
\(43 = 56 - 4 - 9 \)
\(44 = 46 - 5 + \sqrt{9 }\)
\(45 = 54 - 6 - \sqrt{9 }\)
\(46 = \frac{ 6 }{ \sqrt{9}! } + 45 \)
\(47 = \frac{ 6 }{ \sqrt{9} } + 45 \)
\(48 = 45 - 6 + 9 \)
\(49 = 95 - 46 \)
\(50 = 46 - 5 + 9 \)
\(51 = 96 - 45 \)
\(52 = 65 - 4 - 9 \)
\(53 = 5 \cdot 9 + \sqrt{64 }\)
\(54 = 45 + 6 + \sqrt{9 }\)
\(55 = 56 - 4 + \sqrt{9 }\)
\(56 = \frac{ 6 }{ \sqrt{9} } + 54 \)
\(57 = 54 - 6 + 9 \)
\(58 = 65 - \sqrt{49 }\)
\(59 = \sqrt{59^{6 - 4 }}\)
\(60 = 45 + 6 + 9 \)
\(61 = 56 - 4 + 9 \)
\(62 = \sqrt{4 \cdot 9} + 56 \)
\(63 = \sqrt{49} + 56 \)
\(64 = 94 - 5 \cdot 6 \)
\(65 = 5! - 46 - 9 \)
\(66 = 64 + 5 - \sqrt{9 }\)
\(67 = 59 + \sqrt{64 }\)
\(68 = 64 - 5 + 9 \)
\(69 = 54 + 6 + 9 \)
\(70 = 65 - 4 + 9 \)
\(71 = 95 - 4 \cdot 6 \)
\(72 = \sqrt{49} + 65 \)
\(73 = ( 4 + 9 ) \cdot 6 - 5 \)
\(74 = \frac{ 6! - 54 }{ 9 }\)
\(75 = \frac{ 6! - 45 }{ 9 }\)
\(76 = \frac{ 456 }{ \sqrt{9 }! }\)
\(77 = 5! - 49 + 6 \)
\(78 = 64 + 5 + 9 \)
\(79 = 5 \cdot 6 + 49 \)
\(80 = 65 + 4! - 9 \)
\(81 = \frac{ 54 }{ 6 } \cdot 9 \)
\(82 = 94 - \sqrt{\frac{ 6! }{ 5 }}\)
\(83 = 4 \cdot 6 + 59 \)
\(84 = ( 5 \cdot 6 - 9 ) \cdot 4 \)
\(85 = 95 - 4 - 6 \)
\(86 = \frac{ 54 + 6! }{ 9 }\)
\(87 = 95 - \sqrt{64 }\)
\(88 = ( 9 - 5 )! + 64 \)
\(89 = 4 \cdot 5 + 69 \)
\(90 = \frac{ \sqrt{49}! }{ 56 }\)
\(91 = 5 \cdot 9 + 46 \)
\(92 = 4 \cdot 9 + 56 \)
\(93 = 94 + 5 - 6 \)
\(94 = \frac{ 564 }{ \sqrt{9 }! }\)
\(95 = 94 - 5 + 6 \)
\(96 = ( 5 - 4 ) \cdot 96 \)
\(97 = 95 - 4 + 6 \)
\(98 = 65 + 4! + 9 \)
\(99 = \frac{ 594 }{ 6 }\)
\(100 = \frac{ 6! }{ 5! } + 94 \)