Toggle navigation
Facts
Questions
Types
Top Ten
Attractions
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Filter by alphabet
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Questions about The Number 0
Who actually invented the number 0?
What is the irrational number, 0 or 3.14 or pi or 22/7?
Is infinity greater or the number 0?
How did people count before the invention of the number 0?