The centre of the third figure is empty. What digit should fit inside?

What is at the end of a rainbow?

You can hear me, but you can't touch or see me.

What am I?

What is the word or phrase below?
R | E | A | D

How many words can a pen with half refill write?

What's a single-digit number with no value?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

What can go through glass without breaking it?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?