why number 8549176320 is one of a kind?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

Who has married many women but was never married?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

What is so fragile that saying its name breaks it?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

Rebus Puzzle Definition: A rebus is an illusion device that uses pictures to represent words or parts of words.
What does This Rebus Puzzle Identify?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?