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18 points are indicated on the perimeter...

18 points are indicated on the perimeter of a triangle ABC (see figure). If three points are choosen probability it will form a triangle. Figure `(331)/(816)` (b) `1/2` (c) `(355)/(408)` (d) `(711)/(816)`

A

331

B

408

C

710

D

711

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The correct Answer is:
D
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