If it took eight men ten hours to build a wall, how long would it take four men to build it?

If two's company, and three's a crowd, then whats four and five ?

What seven-letter word has hundreds of letters in it?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Buy me, smell me or deliver me, I do not change.

Who am I?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

If Japan and Panama decided to merge into a single country, probably people will name it Japanama.

Can you think of two more such country's unions that could produce similar names like Japanama by overlapping their three letters?