数字3を4個含む数式（９）を作成する問題の解答例を示します。
問題の解
[ 1] 3!+3+3-3
[ 2] (3+3!)*3/3
[ 3] (3+3-3)*3
[ 4] (3!*3!)/3-3
[ 5] (3+3!)/3+3!
[ 6] 3*3*3/3
[ 7] 3*3+3-3
[ 8] 3*3!-3-3!
[ 9] 3!*3!/3-3
[10] 3*3!-3*3
[11] 3*(3*3-3!)
[12] 3*(3!+3)/3
[13] (33-3!)/3
[14] .3*(3!*3!-3!)
[15] (-3+33)*.3
[16] 3/.3-3/3
[17] (.3*3!-.3)*3!
[18] (-3+3!-.3)/.3
[19] (3*.3)/.3+3!
[20] (3*3/.3)*.3
[21] (α*3!)*3!-3
[22] 3!/(α*3!)+3!
[23] (3+3!)*α+3!
[24] (3+3!-3!)/α
[25] 3/α-3+3
[26] 3!/α-3!-3
[27] (3/α-3!)/α
[28] 3*(3+3!)*α
[29] 3/(3*α)+3!
[30] 3*(3/α-3!)
[31] (33-3!)*α
[32] 3*(3/α-3!)
[33] 3!/α-3/α
[34] 3*3*α+3!
[35] 3*3!-3/α
[36] 3/(α*α*α)
[37] .3/(α*α*.3)
[38] 3/.3-(α*3)
[39] 3/.3-3*α
