All 100 targets have a solution.
\(1 = ( 249 \cdot 0 )!\)
\(2 = 49 \cdot 0 + 2 \)
\(3 = 4 - 29^{0 }\)
\(4 = 9 - \frac{ 20 }{ 4 }\)
\(5 = 29^{0} + 4 \)
\(6 = \frac{ ( 9 - 4 )! }{ 20 }\)
\(7 = 20 - 4 - 9 \)
\(8 = 9 - 24^{0 }\)
\(9 = 24 \cdot 0 + 9 \)
\(10 = 24^{0} + 9 \)
\(11 = 40 - 29 \)
\(12 = \sqrt{( 20 - 4 ) \cdot 9 }\)
\(13 = 20 - \sqrt{49 }\)
\(14 = \frac{ 20 }{ 4 } + 9 \)
\(15 = 20 + 4 - 9 \)
\(16 = 4 \cdot 9 - 20 \)
\(17 = \frac{ 40 }{ 2 } - \sqrt{9 }\)
\(18 = ( 4 - ( 0 + 2 ) ) \cdot 9 \)
\(19 = \frac{ 20 }{ \sqrt{4} } + 9 \)
\(20 = ( 4 - \sqrt{9} ) \cdot 20 \)
\(21 = 20 + 4 - \sqrt{9 }\)
\(22 = 40 - 2 \cdot 9 \)
\(23 = 24 - 9^{0 }\)
\(24 = 0 \cdot 9 + 24 \)
\(25 = 20 - 4 + 9 \)
\(26 = \sqrt{4 \cdot 9} + 20 \)
\(27 = 20 + \sqrt{49 }\)
\(28 = 29 - 4^{0 }\)
\(29 = 49 - 20 \)
\(30 = 4^{0} + 29 \)
\(31 = 20 + \sqrt{4} + 9 \)
\(32 = 4 \cdot \sqrt{9} + 20 \)
\(33 = 20 + 4 + 9 \)
\(34 = \frac{ 204 }{ \sqrt{9 }! }\)
\(35 = 20 + 4! - 9 \)
\(36 = \sqrt{20 - 4} \cdot 9 \)
\(37 = 2^{0} + 4 \cdot 9 \)
\(38 = \sqrt{4} \cdot 9 + 20 \)
\(39 = 40 + 2 - \sqrt{9 }\)
\(40 = \frac{ 240 }{ \sqrt{9 }! }\)
\(41 = 9^{2} - 40 \)
\(42 = 0 \cdot 9 + 42 \)
\(43 = 9^{0} + 42 \)
\(44 = ( 20 - 9 ) \cdot 4 \)
\(45 = \frac{ 20 }{ 4 } \cdot 9 \)
\(46 = 2 \cdot \sqrt{9} + 40 \)
\(47 = 40 - 2 + 9 \)
\(48 = 90 - 42 \)
\(49 = 0 \cdot 2 + 49 \)
\(50 = 2^{0} + 49 \)
\(51 = 40 + 2 + 9 \)
\(52 = 92 - 40 \)
\(53 = 20 + 4! + 9 \)
\(54 = ( 0 + 2 + 4 ) \cdot 9 \)
\(55 = ( 0! + 2 )! + 49 \)
\(56 = 4 \cdot 9 + 20 \)
\(57 = \frac{ 90 + 4! }{ 2 }\)
\(58 = 2 \cdot 9 + 40 \)
\(59 = 29 \cdot \sqrt{4} + 0 !\)
\(60 = \frac{ 40 }{ 2 } \cdot \sqrt{9 }\)
\(61 = 9^{\sqrt{4}} - 20 \)
\(62 = ( 40 - 9 ) \cdot 2 \)
\(63 = ( 0! + 2 + 4 ) \cdot 9 \)
\(64 = 20 \cdot \sqrt{9} + 4 \)
\(65 = 2^{0} + 4^{\sqrt{9 }}\)
\(66 = 90 - 24 \)
\(67 = \frac{ 402 }{ \sqrt{9 }! }\)
\(68 = \frac{ 204 }{ \sqrt{9 } }\)
\(69 = 20 + 49 \)
\(70 = \frac{ 420 }{ \sqrt{9 }! }\)
\(71 = 20 \cdot 4 - 9 \)
\(72 = ( 20 + 4 ) \cdot \sqrt{9 }\)
\(73 = 24 \cdot \sqrt{9} + 0 !\)
\(74 = 94 - 20 \)
\(75 = ( 24 + 0! ) \cdot \sqrt{9 }\)
\(76 = \sqrt{9}!^{2} + 40 \)
\(77 = 20 \cdot 4 - \sqrt{9 }\)
\(78 = 90 - \frac{ 4! }{ 2 }\)
\(79 = 9^{0 + 2} - \sqrt{4 }\)
\(80 = \frac{ 240 }{ \sqrt{9 } }\)
\(81 = 9^{4 - ( 0 + 2 )}\)
\(82 = 90 - 2 \cdot 4 \)
\(83 = 20 \cdot 4 + \sqrt{9 }\)
\(84 = 90 - 2 - 4 \)
\(85 = 9^{0 + 2} + 4 \)
\(86 = ( 40 + \sqrt{9} ) \cdot 2 \)
\(87 = ( 4 - 0! ) \cdot 29 \)
\(88 = 90 + 2 - 4 \)
\(89 = 20 \cdot 4 + 9 \)
\(90 = \frac{ 20 }{ \sqrt{4} } \cdot 9 \)
\(91 = 92 - 4^{0 }\)
\(92 = 90 - 2 + 4 \)
\(93 = 4^{0} + 92 \)
\(94 = 0 \cdot 2 + 94 \)
\(95 = 2^{0} + 94 \)
\(96 = 90 + 2 + 4 \)
\(97 = 49 \cdot 2 - 0 !\)
\(98 = ( 40 + 9 ) \cdot 2 \)
\(99 = 49 \cdot 2 + 0 !\)
\(100 = ( 9 - 4 ) \cdot 20 \)