Why it don't give output?

Question

I have written a code in ruby and I think why should I not write A to Z?
https://code.sololearn.com/ccD44Op4vQdH/?ref=app

Answer 1

What are you trying to do here?
What you are actually printing is:
2 to the power 2 to the power 2 to the power ...

** means exponential. 2**3 = 2*2*2 = 8