A is correct.
If the two shorter sides squared and added together, equals the longer side squared, then it is a right triangle.
The answer should be: 5/8 x 1/10 = 1/16.
10 would be you best choice
If 2 of 12 eggs are cracked, then 10 are not cracked.
SO
10/12=5/6=about 0.83
0.83 of total eggs not cracked is also equivalent to 83 percent as asked in the problem :)