Which tank will fill first?

Can you find the six hidden animals in the picture below?

What is the below Rebus indicate?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

Look at the picture and find out which square is not linked with any of the other squares.

Which country gets ill every time?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

What is the next number in this series?

4,12,84,3612....

Why do you find that most of the buildings are deprived of the 13th floor?