It is 97.
63
As a string, the largest number is 7111111.
Unless this is a trick question 9995 would be the largest 4 digit number with 5 as one of its digits
An eight digit number with one zero cannot remain the same when its digits are reversed. It must have an even number of 0s.
97
97
97
97
To give the particular number the largest possible value, arrange the digits in the order of their individual value, beginning with the largest one on the left and smallest on the right. To give the particular number its smallest possible value, arrange the digits in the order of their individual value, beginning with the smallest one on the left and largest on the right.
Answer: 7000007Reasoning:The only odd numbers in those digits are the two 7's. The zero's are even. Therefore if you need the largest odd number possible, one of the 7's has to be the last number and one has to be the first. In which case your answer is 7000007
9
The largest 4-digit number with two different digits is 9998. Its successor is the next number, which is 9999. However, 9999 has only one digit (9), so we need to find the next valid 4-digit number with two different digits. This number is 10000, which is technically a 5-digit number, so the largest valid number with two different digits before 9999 is 9998, and its successor cannot be a 4-digit number with two different digits. Thus, there is no valid successor that meets the criteria.