Find the greatest 4-digit number with all different digits.
Answer:
9876
- As we know that there are ten different digits, i.e., 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9, where 9 is the greatest of all.
- We have to form the greatest 4-digit number without repeating the digits.
It means that we need to place the greatest digit at the thousands place, i.e., 9 and arrange the rest of the digits in the descending order, i.e., 9, 8, 7, and 6. . - Hence, 9876 is the greatest 4-digit number with all different digits.