1
Either five or nine can be used.
What numbers are you talking about? It will tell you the displacement and a engine code. The engine code is used at dealers and garages.
Only the numbers used in binary code are used twice while all the other numbers are only used once. This numbers are alphabetically arranged ..
They aren't used.
The Morse code
106 or a million.
Not 2 numbers - 2 digits. The digits 0 and 1.
I'm guessing that you mean STD = Subscriber Trunk Dialling (telephone area code) rather than STD = Sexually Transmitted Disease. STD code is another term used in some country for telephone area codes. The purpose of a telephone area code is to group telephone numbers by geographic area. In many cases, at least some calls to numbers with the same STD code as the caller can be dialed without the STD code, allowing shorter dialing sequences for many local calls.
Universal Product Code. It's the bar code and numbers used to identify a product.
The country code +216 is for Tunisia. It is used when dialing Tunisian phone numbers from abroad.
In the United Arab Emirates, phone numbers typically consist of 9 digits, excluding the country code. The country code for the UAE is +971, which is used when dialing from abroad. Local numbers begin with a specific two-digit area code, followed by a seven-digit subscriber number.
A number can be used to name something by assigning it as an identifier or label, such as a product code, postal code, ISBN, or phone number. Numbers can also be used in sequential order to categorize or organize items, like room numbers or reference numbers.