# Question: Why Mobile No Is 10 Digit?

## Do all mobile numbers have 10 digits?

Mobile phone numbers always consist of 10 digits.

The first digit of the “zone prefix” of a mobile number is always ‘4’.

Then follows 2 digits indicating to which Mobile Operator’s pool the number originally belonged when it was taken into usage..

## How do you ask someone’s number in English?

If you want to be more formal or polite, you can say, “Could you tell me the number for the library?” Your question should be ‘How do you ask FOR a telephone number in English?’ You ask a question, you ‘ask for’ something that you need. And I agree that the most normal expression is the number ‘for’ a place or person.

## What are numbers 0 to 9 called?

The counting numbers or natural numbers along with zero form whole numbers. We use the digits 0 to 9 to form all the other numbers. Using these 10 digits we can form infinite numbers. This number system using 10 digits is called Decimal Number System.

## How do you read a mobile number?

Our phone number has 11 digits, or 8 digits, or if using the old number format, 6 digits. I always read the area code (first three) then the rest in two blocks of four. I read the three sixes as six, six, six. Even when we only needed the last six digits I always read them as six six six five seven eight.

## What country has a 10 digit phone number?

RomaniaRomania has a modern telephone network of landlines and mobile (cell) phones. It’s possible to receive and make direct international calls from anywhere in the country. Romania’s country code is 40. All Romanian landline numbers have 10 digits, consisting of a zero, plus a city code and the number.

## Why are phone numbers 7 digits long?

This limit, which psychologists dubbed the “magical number seven” when they discovered it in the 1950s, is the typical capacity of what’s called the brain’s working memory. … It turns the spoken words that make up a telephone number into digits that can be written down or used to reply logically to a question.

## What is a 11 digit number?

A 11-digit number is a number that has 11 digits where the first digit must be 1 or greater. … How many 11-digit numbers are there? Smallest 11-digit number. The smallest 11-digit number is 1 followed by 10 zeros. This number is called ten billion.

## What’s a 10 digit number called?

1,000,000,000 (one billion, short scale; one thousand million or milliard, yard, long scale) is the natural number following 999,999,999 and preceding 1,000,000,001. One billion can also be written as b or bn.

## What is the meaning of 10 digit mobile number?

In the United States and Canada, ten-digit dialing is the practice of including the area code of a telephone number when dialing to initiate a telephone call. When necessary, a ten-digit number may be prefixed with the trunk code 1, which is referred to as 1+10-digit dialing or national format.

## How many numbers can you make with 10 digits?

Well, this could turn out to be a simple permutation problem: you have ten number choices (0-9) for each digit of a phone number and repetitions are allowed. Technically, there could be as many as \begin{align*}10^{10} = 10,000,000,000\end{align*}, or 10 billion possible phone numbers in the U.S.

## How do you write phone numbers in words?

Special Notes:When writing phone numbers, separate. each group of digits with a hyphen ( – ): 520-447-9821.Occasionally, people say the last four. digits of phone numbers like two normal. two-digit numbers: 447-9821 = four – four – … The area code is sometimes written inside. parentheses ( ) and without a hyphen:

## Why are there only 10 digits?

It represents the number of times we ran out of digits. … Machines count bigger numbers in the same way we do: by counting how many times they run out of digits. This system is called binary and the binary number 10 means the machine ran out of digits one time. A human would call this number two.

## Are all mobile phone numbers 11 digits?

The code is what someone in a different area must dial before dialling your number. Almost all UK phone numbers, including the code, are 11 digits long. There are a few areas with 10 digits but not many. For example, Whatton in Nottinghamshire, 01949, has 5-digit numbers, making 10 digits in total.

## How do you know what number is in English?

How to Say Numbers in the Thousands15,560 – fifteen thousand five hundred sixty.786,450 – seven hundred six thousand four hundred fifty.342,713 – three hundred forty-two thousand seven hundred thirteen.569,045 – five hundred sixty-nine thousand forty-five.

## Is 0 a single digit number?

Therefore 0 has 1 digit. As noted, the answer depends a lot on what you’re using it for. For writing the number zero out, it clearly has one digit — but for some applications, it’s useful to say that zero has ‘negative infinity’ digits! … For instance, 48 and 35 each have two digits, and 48×35=1680 has four digits.