What is the measurements of ∠ ABC

Pretty sure we need more data here but all triangles add up to 180 degrees

P(At least one sum of 8) = 1 - P(No sums of 8)
 
P(At least one sum of 8) = 1 - (1 - 5/36)^2

P(At least one sum of 8) = 1 - (31/36)^2

P(At least one sum of 8) = 1 - 961/1296
 
P(At least one sum of 8) = 335/1296
 
So the answer is choice B

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