why number 8549176320 is one of a kind?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

How could a baby fall out of a twenty-story building onto the ground and live?

Why is a river so rich ?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

If you had an infinite supply of water and 5-quart and 3-quart pails, how would you measure exactly 4 quarts? What is the least number of steps you need?

One day, I thought of ways that can be used for creating a palindrome. So I decided that I will turn into a larger number by adding the reversed digits to the original number and keep doing it till I finally obtained a palindrome.

I am not sure if this process will always result in a palindrome eventually but I was able to produce a four-digit palindrome. Can you guess my starting number?

You bought me for dinner but never eat me. What am I?