Your question is Handling Unclear Testing Tasks. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Drew 3 triangles on a whiteboard; an isosceles, equilateral, and scalene. Said a programmer came to me asking me to test this program without telling me what it was supposed to do, what kind of input it took, or anything really. There are 3 inputs and 1 output. Output depended on the inputs.