What do you get if you add 2 to 100 four times?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

How is a fly different from a mosquito?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

Why did the Girl throw the butter out of the window?

What number should come in place of the question mark below?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

Which is Odd One Out and why?

4377

3954

9862

8454

9831