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A number x is chosen at random from the set `{1,2,3,4, ………., 100}`. Defind the event : A = the chosen number x satisfies `((x-10)(x-50))/((x-30))ge0`, then P(A) is

A

`0.71`

B

`0.70`

C

`0.51`

D

`0.20`

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