Logic Riddles

Question: what is ready when you add a letter inside?

Question: How can you make 4 triangles with 6 equal sticks?

Question: what comes up but never goes down

Question: A riddle that you cannot answer.

Question: There are ten children and ten cookies in a jar. Mrs. Suzie needs to give one cookie to each child. The children also want her to keep one cookie in the jar. how is this possible?