Q: What is an algorithm to calculate the sum of the digits of a three digit number?

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It's basically the algorithm to break a number down to digits. Then each digit would be represented as a natural binary number on its own.To break it down to digits, get a remainder after division with 10 (that's the last digit), then divide the number by 10 to remove that digit. Repeat until there are digits, and store each one into an array (or print them to screen without storing).

987654321 is the highest nine-digit number with no repeated digits.

The largest ten digit number with no repeated digits is '9876543210'.

If repeated digits are allowed, then the largest 12-digit number is 999,999,999,999 .If repeated digits are not allowed, then the largest 12-digit number is 989,898,989,898 .If the same digit can't be used more than once, then the largest possible number has only10 digits. The number is 9,876,543,210 .

The greatest 4-digit number with no repeated digits is... 9876

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Check digits are determined (or derived) by a set algorithm using the digits of the account number.

It's basically the algorithm to break a number down to digits. Then each digit would be represented as a natural binary number on its own.To break it down to digits, get a remainder after division with 10 (that's the last digit), then divide the number by 10 to remove that digit. Repeat until there are digits, and store each one into an array (or print them to screen without storing).

Standard algorithm is when you take two digits or decimals and you put the digit or decimal with the greater value on top and the digit or decimal with the least value on the bottom and you contrast the digits/decimals to see if it greater than, less than,or equal to.

Since there are only five different digits, a 6-digit number can only be generated if a digit can be repeated. If digits can be repeated, the smallest 6-digit number is 111111.

987654321 is the highest nine-digit number with no repeated digits.

The largest ten digit number with no repeated digits is '9876543210'.

If repeated digits are allowed, then the largest 12-digit number is 999,999,999,999 .If repeated digits are not allowed, then the largest 12-digit number is 989,898,989,898 .If the same digit can't be used more than once, then the largest possible number has only10 digits. The number is 9,876,543,210 .

An example of an algorithm that will reverse a number is written as such, digit reverse(num), while (num>0) then, digit =num%10. This particular algorithm divides a number by 10 until the original number from the LSD is found.

The greatest 4-digit number with no repeated digits is... 9876

There is no last digit of pi. It is possible to calculate the digits of pi an infinite number of times. The one millionth number is 5.

It can have up to 5 digits.

The largest number with no repeated digits is 9,876,543,210 although it is 10 digits long, the largest 3 digit number with no repeated digits is 987