What number when divided in half becomes zero?

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?

What is the Surname of Barbie Doll?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

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

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

I am white when I am dirty, and black when I am clean. What am I?