Why 1729 is a magic number? Answer Logically.

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Look at me. I can bring a smile to your face, A tear to your eye, Or even a thought to your mind. But, I can't be seen. What am I?

I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

You have a thousand Re. 1 coins with you. You have ten bags with you and you can put any number of coins in each of the bags. The condition is that if someone asks you for any amount between 1 and 1000, you must be able to give that amount by just giving the bag (you are not allowed to open the bag and give coins).

How will you do it?

The cream is heavier than Milk. True or False?

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

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?