If this is an "always, sometimes, never" kind of problem, the answer is sometimes.
An isosceles triangle can be an obtuse triangle sometimes (but might be right or acute. An obtuse triangle can be isosceles or may be scalene. An obtuse triangle cannot be a right triangle nor equilateral.
2,356 students would say corn is their favorite because if 62 out of 100 loved corn and there are 3,800 students you can multiply 62 by 38 and get your answer.
