
Question:
What is Zero ? 

Answer:
Zero is symbolized
by 0 and has several meanings. The number which does not change
anything when you add it to another number. On the number line it
lies mid way between 1 and + 1. It is the value of a set which
has no members. The symbol for zero is 0.
 It is the starting point for many scales, such as temperature
in degrees Celsius, where it corresponds to the freezing point
of water.
 It is a place holder in our number system enabling us, for
example, to distinguish between 4, 40, and 0.0004
 The diagonals bisect the interior angles and are lines of symmetry.
 The number which we can add to anything without changing it
(i.e the additive identity).
 The number which is unchanged by multiplication by other numbers.
 Zero is both real and rational.
 It is the name given to the identity element under addition
for numbers, vectors and matrices. For example,


