Answer:
What begins and has no end? What is the ending of all that begins?
What word looks the same upside down and backwards?
A tree with 5 branches, no leaves and no fruits
By the way, what never moves, wears shoes, sandals and boots, but has no feet?
It cannot be seen, it weighs nothing, but when put into a barrel, it makes it lighter.
How can you add eight 6s together so that the total adds up to 750?