Which number should replace the question mark?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

Can you count the number of quadrilaterals in the picture below?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

What has a bottom at the top?