Triangles

Five sticks with a length of 2,3,4,5,6 cm. How many ways can you choose three sticks to form three sides of a triangle?

Correct result:

n =  7

Solution:

a+b>c n1=5 4 33 2=10  5>=2+3 6>=2+3 6>=2+4   n=n13=103=7



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