数字4を4個含む数式を作成する問題（１０）の解答例を示します。
問題（１０）の解
[ 1] (-4+44)/4
[ 2] -44+4!/α
[ 3] 4*4-4!/4
[ 4] (4+4!/Sqr(α))/4
[ 5] (4-Sqr(α)/α)*4
[ 6] (4/4+4!)*.4
[ 7] 4/α+α/α
[ 8] -4*Sqr(α)/(.4-Sqr(α))
[ 9] -4/(.4-.4-.4)
[10] -4/(α-.4-α)
[11] .4*(.4/.4+4!)
[12] .4-(.4-4/.4)
[13] 4*4!/.4/4!
[14] 4*4/.4/4
[15] 4/(.4*4)*4
[16] 4/(.4-α+α)
[17] 4/.4*Sqr(α)/Sqr(α)
[18] 4/.4+α-α
[19] 4/.4/.4*.4
[20] 4/α+(.4/.4)
