I travel all around the world but always stay in the corner. What am I?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

Which digit occurred maximum times between the number 1 and 1000?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?