I have the answer, you give me a quesiton!?

Question:

I have the answer, you give me a quesiton!?

Instead of me asking a question and you give me an answer, I will give you an answer and you give me a corresponding good question.

The most creative question will get selected. READY?

Answer:
43

Best Answer - Chosen by Asker: What is the number you punch in the calculator to get the word "Eh" when turned upside down?