2013 (2)

Usando del 1 al 9:
1 x 2 + 345 x 6 - 78 + 9 = 2013
1 x 234 + 56 x 7 - 8 - 9 = 2013
12/34 x 5678 + 9 = 2013

Usando del 9 al 1:
9 + 8 + 7 + 654 x 3 - 21 = 2013
9 + 8 - 7 + 654 x 3 + 21 = 2013
9 + 8 x 7 - 6 x 54/3 - 21 = 2013
9 x 8 x 7 - 6 + 5 x 4 + 3 - 2 x 1 = 2013
9 x 8 x 7 - 6 + 5 x 4 + 3 - 2/1 = 2013
98 + 7 - 6 x 5 x 4 + 32 + 1 = 2013
987 x 6 + 54/3 + 21 = 2013
987/6 + 5 x 4 x 3 - 21 = 2013

Usando 9 dígitos iguales:
3 x 3 x 3 + 33 x 33 + 33 = 2013
44/4 - 4/4 + 44 x 44 = 2013
666/6/6 + 6 + 6 x 66 = 2013
888/8 + 8/8 + 8 x 88 = 2013

Usando 111222333:
1 + 1 + 1 x 22 - 2 - 3 x 33 = 2013
1 + 1 x 1 + 222 x 3 x 3 - 3 = 2013
1 + 112 x 2 - 2 x 3 x 3 - 3 = 2013
1 + 1/1 + 222 x 3 x 3 - 3 = 2013
1 x 1 + 1 + 222 x 3 x 3 - 3 = 2013
1 x 11 - 2 x 223 + 3 + 3 = 2013
1 x 112/2 + 2 + 3 x 33 = 2013
11 - 1 + 22 x 2 - 3 x 33 = 2013
11 x 1 - 2 x 223 + 3 + 3 = 2013
11 x 122/2 + 3 - 3 x 3 = 2013
11 x 122/2 - 3 + 3 x 3 = 2013
11 x 122/2 x 3 + 3 - 3 = 2013
11 x 122/2 x 3 - 3 + 3 = 2013
11 x 122/2 x 3 x 3/3 = 2013
11 x 122/2 x 3/3 x 3 = 2013
11 x 122/2/3 x 3 x 3 = 2013
11 x 12/2 - 2 - 3 x 33 = 2013
111 + 2 x 2 - 2 x 3 x 3 - 3 = 2013
11/1 - 2 x 223 + 3 + 3 = 2013
1/1 + 1 + 222 x 3 x 3 - 3 = 2013

Usando 777888999:
7 x 7 x 7 - 88 x 8 - 9 - 9 - 9 = 2013

Usando 999888777:
9 + 9 x 9 - 8 x 88/7 + 77 = 2013

Usando 333222111:
3 x 332 x 2 + 21 + 1 - 1 = 2013
3 x 332 x 2 + 21 - 1 + 1 = 2013
3 x 332 x 2 + 21 x 1 x 1 = 2013
3 x 332 x 2 + 21 x 1/1 = 2013
3 x 332 x 2 + 21/1 x 1 = 2013
3 x 332 x 2 + 21/1/1 = 2013

Usando los primeros dígitos de pi = 3.14159265...:
3 + 1 x 4 + 1 + 5 x 92 - 6 - 5 = 2013
3 + 14 x 1 + 5 x 92 - 6 - 5 = 2013
3 + 14/1 + 5 x 92 - 6 - 5 = 2013
3 x 1 + 4 + 15 x 92 - 6 - 5 = 2013
31 - 4 x 1 - 5 x 92 - 6 - 5 = 2013
31 - 4/1 - 5 x 92 - 6 - 5 = 2013
3/1 + 4 + 15 x 92 - 6 - 5 = 2013