An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

Move three sticks of the spiral below to form a square.

Give it food and it will live; give it water and it will die.

Replace the question mark with the correct number below.

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

I look at you, you look at me I raise my right, you raise your left. What am I?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

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?