All 100 targets have a solution.
\(1 = 50 - 49 \)
\(2 = \frac{ 90 }{ 45 }\)
\(3 = 4 - 59^{0 }\)
\(4 = 5 - 49^{0 }\)
\(5 = \frac{ 40 + 5 }{ 9 }\)
\(6 = \sqrt{90 - 54 }\)
\(7 = 0 \cdot 5 + \sqrt{49 }\)
\(8 = 9 - 45^{0 }\)
\(9 = 45 \cdot 0 + 9 \)
\(10 = \frac{ 40 }{ 9 - 5 }\)
\(11 = \frac{ 40 }{ 5 } + \sqrt{9 }\)
\(12 = \sqrt{50 + 94 }\)
\(13 = 5 - 4^{0} + 9 \)
\(14 = 50 - 4 \cdot 9 \)
\(15 = \frac{ 40 + 5 }{ \sqrt{9 } }\)
\(16 = 40 - ( 9 - 5 )!\)
\(17 = \frac{ 40 }{ 5 } + 9 \)
\(18 = \frac{ 50 + 4 }{ \sqrt{9 } }\)
\(19 = 59 - 40 \)
\(20 = \frac{ 40 }{ 5 - \sqrt{9 } }\)
\(21 = \sqrt{450 - 9 }\)
\(22 = \frac{ 90 }{ 5 } + 4 \)
\(23 = \sqrt{409 + 5 !}\)
\(24 = \frac{ 40 }{ 5 } \cdot \sqrt{9 }\)
\(25 = 40 - 5 \cdot \sqrt{9 }\)
\(26 = 40 - 5 - 9 \)
\(27 = \frac{ 5! }{ 40 } \cdot 9 \)
\(28 = \sqrt{904 - 5 !}\)
\(29 = ( 0 + 4 ) \cdot 5 + 9 \)
\(30 = \frac{ 90 }{ 5 - \sqrt{4 } }\)
\(31 = 9^{\sqrt{4}} - 50 \)
\(32 = \sqrt{904 + 5 !}\)
\(33 = ( 5 - 4^{0} )! + 9 \)
\(34 = \frac{ 50 }{ \sqrt{4} } + 9 \)
\(35 = \sqrt{40 + 9} \cdot 5 \)
\(36 = 90 - 54 \)
\(37 = 50 - 4 - 9 \)
\(38 = 40 - 5 + \sqrt{9 }\)
\(39 = 50 - \sqrt{4} - 9 \)
\(40 = \frac{ 90 }{ \sqrt{4} } - 5 \)
\(41 = ( 0 + 4 ) \cdot 9 + 5 \)
\(42 = 40 + 5 - \sqrt{9 }\)
\(43 = 50 - \sqrt{49 }\)
\(44 = 94 - 50 \)
\(45 = \frac{ 405 }{ 9 }\)
\(46 = 9^{0} + 45 \)
\(47 = 45 - 0! + \sqrt{9 }\)
\(48 = 49 - 5^{0 }\)
\(49 = 0 \cdot 5 + 49 \)
\(50 = \frac{ 450 }{ 9 }\)
\(51 = 50 + 4 - \sqrt{9 }\)
\(52 = 50 - 4 + \sqrt{9 }!\)
\(53 = 54 - 9^{0 }\)
\(54 = 40 + 5 + 9 \)
\(55 = 95 - 40 \)
\(56 = \frac{ 504 }{ 9 }\)
\(57 = \sqrt{49} + 50 \)
\(58 = 59 - 4^{0 }\)
\(59 = 0 \cdot 4 + 59 \)
\(60 = \frac{ 540 }{ 9 }\)
\(61 = 50 + \sqrt{4} + 9 \)
\(62 = 4 \cdot \sqrt{9} + 50 \)
\(63 = 50 + 4 + 9 \)
\(64 = ( 9 - 5 )! + 40 \)
\(65 = 50 + 4! - 9 \)
\(66 = ( 4 + 9 ) \cdot 5 + 0 !\)
\(67 = ( 0 + 4 )! \cdot \sqrt{9} - 5 \)
\(68 = \sqrt{4} \cdot 9 + 50 \)
\(69 = ( 0 + 4 )^{\sqrt{9}} + 5 \)
\(70 = 90 - 4 \cdot 5 \)
\(71 = 5! - 40 - 9 \)
\(72 = \frac{ 40 }{ 5 } \cdot 9 \)
\(73 = ( 5 - 0! )! + 49 \)
\(74 = 4 \cdot \sqrt{9}! + 50 \)
\(75 = \frac{ 450 }{ \sqrt{9 }! }\)
\(76 = 9^{0 + \sqrt{4}} - 5 \)
\(77 = 5! - 40 - \sqrt{9 }\)
\(78 = ( 50 - 4! ) \cdot \sqrt{9 }\)
\(79 = 9^{\sqrt{5 - 0!}} - \sqrt{4 }\)
\(80 = ( 5 - \sqrt{9} ) \cdot 40 \)
\(81 = 90 - 4 - 5 \)
\(82 = ( 50 - 9 ) \cdot \sqrt{4 }\)
\(83 = 50 + 4! + 9 \)
\(84 = \frac{ 504 }{ \sqrt{9 }! }\)
\(85 = 5 \cdot 9 + 40 \)
\(86 = 4 \cdot 9 + 50 \)
\(87 = 90 + \sqrt{4} - 5 \)
\(88 = 94 - 0! - 5 \)
\(89 = 90 + 4 - 5 \)
\(90 = \frac{ 540 }{ \sqrt{9 }! }\)
\(91 = 90 - 4 + 5 \)
\(92 = 95 + 0! - 4 \)
\(93 = 94 - 5^{0 }\)
\(94 = 0 \cdot 5 + 94 \)
\(95 = 5^{0} + 94 \)
\(96 = 4^{0} + 95 \)
\(97 = 90 + \sqrt{4} + 5 \)
\(98 = \frac{ 490 }{ 5 }\)
\(99 = 40 + 59 \)
\(100 = \sqrt{4} \cdot 5 + 90 \)