colors
check
your
answer
show
answer
show
key
mode
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decode
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fixed
example
random
example
Enter
digits
to
see
the
POSTNET
bar
code
.
If
[
Mod
[
10
-
,
10
]
0
,
You
have
a
valid
POSTNET
number
.
,
Your
check
digit
is
not
correct
.
]
