How can you write nineteen in a manner that if we take out one, it becomes twenty?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

What does the below image rebus riddle means ?

To tease, King Akbar told his most clever advisor Birbal to give his daughter one thing that she can eat when hungry, drink if she feels thirsty and can burn if she feels cold. King Akbar was shocked when Birbal gave Akbar's daughter one such thing that satisfies all of the above.

What did Birbal give to Akbar's daughter?

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

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

Can you find out which number multiplied by itself will give the output as 12345678987654321?