=ROUNDDOWN(RAND()*10,2), 小數點以下2 位, 0 ≦ x ≦ 9.99. =RANDBETWEEN(1,100), 整數, 1 ≦ x ≦ 100. =RANDBETWEEN(-1,1), 整數, -1 ≦ x ≦ 1.
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