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