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A 10-cm stick has a mark at each centimeter. By breaking the stick at two of these nine marks at random, the stick is split into three pieces, each of integer length. What is the probability that the three lengths could be the three side lengths of a triangle? Express your answer as a common fraction.

 Nov 2, 2019
 #1
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Im not sure but the probability is either 1/6 or 7. Please correct if wrong.

 Nov 3, 2019
 #2
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Yeah, it's right. Thanks!

Herp2derp  Nov 4, 2019

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