All 100 targets have a solution.
\(1 = ( 479 \cdot 0 )!\)
\(2 = \sqrt{\sqrt{90 - 74 }}\)
\(3 = 4 - 79^{0 }\)
\(4 = \sqrt{90 - 74 }\)
\(5 = 79^{0} + 4 \)
\(6 = 7 - 49^{0 }\)
\(7 = \frac{ 40 + 9 }{ 7 }\)
\(8 = 9 - 47^{0 }\)
\(9 = 47 \cdot 0 + 9 \)
\(10 = \frac{ 70 }{ \sqrt{49 } }\)
\(11 = \frac{ 40 - 7 }{ \sqrt{9 } }\)
\(12 = 7 - ( 0 + 4 ) + 9 \)
\(13 = 0 \cdot 7 + 4 + 9 \)
\(14 = \frac{ 70 }{ 9 - 4 }\)
\(15 = \frac{ 90 }{ ( 7 - 4 )! }\)
\(16 = 90 - 74 \)
\(17 = \sqrt{40 \cdot 7 + 9 }\)
\(18 = \frac{ 90 }{ 7 - \sqrt{4 } }\)
\(19 = 40 - 7 \cdot \sqrt{9 }\)
\(20 = \frac{ 40 }{ 9 - 7 }\)
\(21 = 70 - 49 \)
\(22 = \frac{ 70 - 4 }{ \sqrt{9 } }\)
\(23 = 7 \cdot 9 - 40 \)
\(24 = 94 - 70 \)
\(25 = 79^{0} + 4 !\)
\(26 = \frac{ 70 }{ \sqrt{4} } - 9 \)
\(27 = ( 7 - ( 0 + 4 ) ) \cdot 9 \)
\(28 = ( 0 \cdot 9 + 4 ) \cdot 7 \)
\(29 = ( 0 + 4 ) \cdot 9 - 7 \)
\(30 = \frac{ 90 }{ 7 - 4 }\)
\(31 = ( 0 + 4 ) \cdot 7 + \sqrt{9 }\)
\(32 = ( 9 - 7^{0} ) \cdot 4 \)
\(33 = ( 0 \cdot 7 + 4 )! + 9 \)
\(34 = 70 - 4 \cdot 9 \)
\(35 = ( 9 - ( 0 + 4 ) ) \cdot 7 \)
\(36 = 40 - 7 + \sqrt{9 }\)
\(37 = 47 - 0! - 9 \)
\(38 = 40 + 7 - 9 \)
\(39 = 79 - 40 \)
\(40 = \sqrt{40^{9 - 7 }}\)
\(41 = 49 - 0! - 7 \)
\(42 = 40 - 7 + 9 \)
\(43 = 90 - 47 \)
\(44 = 40 + 7 - \sqrt{9 }\)
\(45 = ( 7^{0} + 4 ) \cdot 9 \)
\(46 = 47 - 9^{0 }\)
\(47 = 0 \cdot 9 + 47 \)
\(48 = 9^{0} + 47 \)
\(49 = 0 \cdot 7 + 49 \)
\(50 = 7^{0} + 49 \)
\(51 = 47 + 0! + \sqrt{9 }\)
\(52 = 70 - \sqrt{4} \cdot 9 \)
\(53 = 40 + 7 + \sqrt{9 }!\)
\(54 = ( 7 - 4^{0} ) \cdot 9 \)
\(55 = 47 - 0! + 9 \)
\(56 = 40 + 7 + 9 \)
\(57 = 97 - 40 \)
\(58 = 70 - 4 \cdot \sqrt{9 }\)
\(59 = 70 - \sqrt{4} - 9 \)
\(60 = \frac{ 7! }{ 90 } + 4 \)
\(61 = 7 \cdot \sqrt{9} + 40 \)
\(62 = 90 - 4 \cdot 7 \)
\(63 = 70 - \sqrt{49 }\)
\(64 = 70 - \sqrt{4 \cdot 9 }\)
\(65 = 70 + 4 - 9 \)
\(66 = 74 + 0! - 9 \)
\(67 = ( 0 + 7 ) \cdot 9 + 4 \)
\(68 = 70 + 4 - \sqrt{9 }!\)
\(69 = 70 - 4 + \sqrt{9 }\)
\(70 = \frac{ 490 }{ 7 }\)
\(71 = 70 + 4 - \sqrt{9 }\)
\(72 = \frac{ \sqrt{49}! }{ 70 }\)
\(73 = 74 - 9^{0 }\)
\(74 = 0 \cdot 9 + 74 \)
\(75 = 70 - 4 + 9 \)
\(76 = \sqrt{4 \cdot 9} + 70 \)
\(77 = \sqrt{49} + 70 \)
\(78 = 79 - 4^{0 }\)
\(79 = 0 \cdot 4 + 79 \)
\(80 = ( 9 - 7 ) \cdot 40 \)
\(81 = 70 + \sqrt{4} + 9 \)
\(82 = 4 \cdot \sqrt{9} + 70 \)
\(83 = 70 + 4 + 9 \)
\(84 = 74 + 0! + 9 \)
\(85 = 70 + 4! - 9 \)
\(86 = 94 - 0! - 7 \)
\(87 = 90 + 4 - 7 \)
\(88 = \sqrt{4} \cdot 9 + 70 \)
\(89 = 9^{\sqrt{4}} + 0! + 7 \)
\(90 = ( 4 - 0! + 7 ) \cdot 9 \)
\(91 = ( 0 + 4 + 9 ) \cdot 7 \)
\(92 = 97 - 0! - 4 \)
\(93 = 90 - 4 + 7 \)
\(94 = 0 \cdot 7 + 94 \)
\(95 = 7^{0} + 94 \)
\(96 = 97 - 4^{0 }\)
\(97 = 0 \cdot 4 + 97 \)
\(98 = 4^{0} + 97 \)
\(99 = ( 40 - 7 ) \cdot \sqrt{9 }\)
\(100 = 94 - 0! + 7 \)