What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

Replace the question mark with the correct number in the below-given picture?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

If your uncle’s sister is not your aunt, what relation is she to you?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.