It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

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?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Can you place three balls such that the equation shown in the picture holds true?

what's the probability of getting a king or a queen from a pack of 52 cards?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

Can you count the number of squares in the figure below?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?