Which country gets ill every time?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

Find the missing number in the image below.

Which is the smallest number that you can write using all the vowels exactly once?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

Solve the counting riddle by identifying the number of triangles in the given picture.

Name a key which is hardest to turn.

What occurs twice in a week, once in a year but never in a day?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.