Answer:
how many letters are there in the alphabet
What word is the same written forward, backward and upside down?
What is that which, though black itself, enlightens the world without burning?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.
Until I am measured I am not known, Yet how you miss me when I have flown.
hey are producers of pies and burgers and are great for tipping.