You need to arrange three 7 and mathematical symbols to form number 1?

What is the word or phrase?

In which direction should the missing arrow point?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Can you make four (4) nines (9) equal 100?

Why is the longest human nose just 11 inches?

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?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

What question can you never answer yes to?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?