22621, 44742, 66863, 88984
The answer depends on which digit is 5 and what the other digits are!
50401
22621, 44742, 66863, 88984
452, 894. None other that I can think of
The correct answer is 102,345,678. The number 012,345,678 is considered an eight-digit number; any other rearrangement of the digits, or inserting a 9 in any position, gives a larger number.
898?
zero is used in the number system as a digit and a add on to other digits
The number is 782. The sum of its digits is 7 + 8 + 2 = 17, not 26. Therefore, no such number exists that meets all the given conditions.
34, 45 etc.
I am not sure; mayube 954
Let the first and third digits be equal. Choose any other number as the second digit. 202, 919, etc.
It's been proven that pi is an irrational number. In other words, it can't bewritten with a finite number of digits, and there is no 'last digit'.