During which month do people sleep the least?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Find the number of squares in the below picture

Can you place six X (crosses) in below board without making three in a row in any way ?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

I am a mother. However, I never give birth.

I am a father. However, I never nurse my children.

Wandering is not possible for me, but standing still happens occurs rarely.

Who am I?

Spot 5 differences in two Christmas tree below: