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Because 1 or 2 is too less, and more is too long, 3 is a convenient amount of numbers

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13y ago
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Q: Why emergency number have only 3 digit?
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Related questions

What is 1 digit number?

A one digit number is a number with only one number. For example: 12 is a two digit number. It has two numbers. 3 is a one digit number because it only has one number.


How many 3 digit numbers can be formed from 3769 if each digit is used only once?

Choose from 4 for the first number, 3 for the second number, and 2 for the third number. Therefore there are 4*3*2 = 24 three digit numbers can be formed from 3769 if each digit is used only once.


What 3 digit number multiplied by 1 digit equals a 4 digit number only using the numbers 1 - 8?

625×2=1250


What is the predecessor of 3 digit number?

A smaller 3 digit number or a 2 digit number (99).


The digit in the tenths place is a prime number that is less than the digit 3 in the hundredths place?

The only prime number less than 3 is 2.


What is the digit in the tenths place is a prime number that is less than the digit 3 in the hundredths place?

The only prime number less than 3 is 2.


What is the greatest possible product of a 4 digit number and a 3 digit number?

9999 is the 4-digit number and 999 is the 3-digit number.


What is the largest 2 digit number with only 3 factors?

49


The largest two digit number with only 3 factors?

49


What is the largest two digit number with only 3 factors?

49


How many 3 digit numbers can be found using 3 of the digits 6789 only once in each number?

4 options for the first digit, 3 options for the second digit, 2 options for the third digit. Multiply the number of options together, and you find how many 3-digit numbers you can get.


In the number 2378.91 which digit is in the hundreds place?

The digit in the hundreds place in the number 2378.91 is the digit 3.