Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Kareena is older than Katrina and younger than Karishma. Isabelle is younger than Bipasha and Karishma. Bipasha is older than Karishma. If Kareena and Isabelle are the same age, who's the youngest?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

There was a competition where the contestants had to hold something. At the end of the event, the winner was a person who had no hands or feet. What was it that the contestants had to hold?

Whats the next number in the below number sequence pattern.

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?