The rules of the challenge are as follows: The three of you will ask Kurt a single question each, which he will answer truthfully ‘Yes’ or ‘No’. Every one hears the questions and the answers. He will free you only if one of you tells him the total number of apples in all the cells.
Pip: Is the total an even number?
Kurt: No.
Blossom: Is the total a prime number?
Kurt: No
You have five apples in your cell. What question will you ask?