Why is a river so rich ?

How many triangles are there on the puzzle below?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

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?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

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

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?