No not in America
In São Paulo / Brazil the mobile numbers has added a 9 before de old number
i.e +55 (11) 9 9999 8888
It is a Direct Dial Phone Sms 051.24.19.10 348.76.49.289 direct e-mail [at] radiocittadelcapo.
No
There is no "last digit" of pi. Pi is irrational. Irrational numbers go in forever; like infinity
It depends what station you listen to and where in the world you are.
MHz is not a digit, it is a frequency of one million times per second.
Hey, it's interesting question but...fairies are only imaginary creatures...nd they don't have numbers.... Remind that these are only and imaginary creatures...
0800 numbers work very easy. You install 0800 numbers to your company and clients call you for free. When your customer phones your 0800 numbers (see more how it works, tariffs, pros and cons here http://www.smart-numbers.net/ ) his call is automatically (and instantly) redirected to whichever phone number you have given to the company that installed you 0800 numbers. Clients call for free, but the company has to pay charges for received calls.
Phone numbers vary by carrier. The type is typically a three digit area code numbers 0-9 first then the location numbers that are typically seven digits 0-9. Once a call is places the phone will ring.
Without restrictions, it was would numbers 000-000-0000 through 999-999-9999. So that would be 9,999,999,999 + 1 = 10 billion different 10-digit phone numbers. Ex: If there existed single digit phone numbers, there would be 10, because the digits are 0 through 9. If there existed only double digit phone numbers, then it would be 00 through 99 which would be 100 total two-digit numbers. Therefore the total possible combinations for an X digit phone number would be: 10^X
There are no 3 digit numbers between 0 and 9 because 0 and 9 are 1 digit numbers.
There are 9 digits that can be the first digit (1-9); for each of these there is 1 digit that can be the second digit (6); for each of these there are 10 digits that can be the third digit (0-9); for each of these there are 10 digits that can be the fourth digit (0-9). → number of numbers is 9 × 1 × 10 × 10 = 900 such numbers.
There are 8*9*8*7*6*5*4 = 483840 numbers.
Add "+65" and then the phone number behind. Singapore phone numbers are 8-digit, and office/home numbers begin with 6, mobile numbers begin with 9, and the newer mobile numbers, 8.
10 digit numbers
7
You can select 9 numbers for the first digit, 8 numbers for the second digit, and 7numbers for the third digit; so 504 (e.g. 9*8*7) different three digit numbers can be written using the digits 1 through 9.
There are 9 possible numbers for the first digit (one of {1, 2, ..., 9}); with 9 possible digits for the second digit (one of {0, 1, 2, ..., 9} which is not the first digit)); with 8 possible digits for the third digit (one of {0, 1, 2, ..., 9} less the 2 digits already chosen); This there are 9 × 9 × 8 = 648 such numbers.
There are 10 possible numbers that can be chosen. Since the first digit can't be 0, there are 9 selections for the first digit. The second number can include a 0, but can't include the first number chosen, so there are 9 selections for the second digit. Then there are 8 digits for the next number, 7 digits for the next number, and so on. Total telephone numbers are: 9*9*8*7*6*5*4 = 544320 phone numbers.
There are 16 4-digit numbers that can be made up from 9 and 6.