單元格中參考函式=blend(20)即可,“20”是指20以內的加減法
Function blend(X)
Do
a = Int(Rnd(1) * X + 1)
b = Int(Rnd(1) * X + 1)
k = IIf((Int(Rnd(1) * X + 1) Mod 2) = 0, " + ", " - ")
If k = " - " And a > b Then Exit Do
If k = " + " Then Exit Do
Loop
blend = Format(a, "@@") & k & Format(b, "@@") & " = __"
End Function
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