A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

How many letters are in the alphabet?

What is next number in the pattern below:

131 517 192 123 ?

Can you fill the blank with the correct number?

6 30 870 756030 _____

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

What is the next number in this series?

4,12,84,3612....

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

It belongs to you, but other people use it more than you do. What is it?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?