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freesimens

{X}donates the greatest interger less than equal to X, is {X}=1?

(1) x >1

(2) X<2

答案為C 我完全看不懂這一題 可不可以請高人解釋一次 謝謝

lemonees

25) C
x>1 => {x} = 1, or 2, or 3...
x<2 => {x} = 1, or 0, or -1...