1道概率论的填空题，请给我解答过程，最好是手写的，谢谢！
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P{x = 1} = 1/15
P{x = 2} = 2/15
P{x = 3} = 3/15
P{x = 4} = 4/15
P{x = 5} = 5/15
P{0<x≤2} = P{x = 1} + P{x = 2} = 1/15 + 2/15 = 1/5
P{x = 2} = 2/15
P{x = 3} = 3/15
P{x = 4} = 4/15
P{x = 5} = 5/15
P{0<x≤2} = P{x = 1} + P{x = 2} = 1/15 + 2/15 = 1/5
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