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Mathematical contest preliminary examination questions
2. Let two sides of a triangle be A and B, and the third side be 30-a-b,

a-(30-a-b)& lt; b

a+(30-a-b)>b

Get an a

Because the two sides are not equal, the third side is at least 3, so it is 2.

So A or B can be 3, 4, 5, 6, 7, 8, 9, 10,1,12, 13, 14, so * * has 60.