In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

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?

Can you write down eight eights so that they add up to one thousand?

What goes up but never comes down?

What will you call your mother's brother's brother-in-law?

Replace the question mark with the correct number below.

Which Travels Faster? Solve below famous picture riddle:

Replace the question mark with the number below given a simple math problem.

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

What four weights can be used to balance from 1 to 30 pounds?