yes
Yes, paint by numbers kits are generally considered safe for children.
The row of numbers at the top is generally for those who are used to typing ordinary text documents and use numbers occasionally. The "numerical key pad" is designed for those who use numbers a lot.
-9 and -8, although negative numbers are not generally considered factors.
A calculator can convert numbers that appear as decimals into numbers that appear as fractions. Fractions are generally considered more easy to use then decimals.
page numbers.
Yes, in formal documents, numbers under 10 are typically written out as words.
Certain substances used to be considered vitamins, but no longer are either because they are no longer considered essential, because they can be synthesized within the body in sufficient quantities or because they are essential only for organisms other than humans. Hence the missing numbers - there are substances with those numbers, but they aren't technically vitamins.
Numerology is generally considered haram in Islam because it involves the belief in mystical powers associated with numbers, which goes against the monotheistic beliefs of Islam.
To send and receive documents from their office. A fax machine is generally considered to be a faster way of sending a message than mail or courier, and provides a proof of message received that email does not. As well, fax numbers are often more publically available than email addresses.
819
I recommend shredding anything you get in the mail that has any identifying information. If you have documents in your home with information such as credit card numbers or social security numbers, I would shred unless you are keeping them in a secure place.
The numbers on court documents indicate the case number. The first numbers indicate the year the case was filed.