24
256
9,999,876 is the greatest seven-digit number using four different digits.
The four-digit numbers that can be formed using the digits 6, 7, 8, and 9, without repetition, are all the permutations of these four digits. There are 24 possible combinations, including numbers like 6789, 6798, 6879, and so on. Essentially, any arrangement of these four digits constitutes a valid four-digit number.
The greatest 4-digit number with no repeated digits is... 9876
18 (and 6 more starting with a 0).
how make the answer im don/now
256
9,999,876 is the greatest seven-digit number using four different digits.
1
The four-digit numbers that can be formed using the digits 6, 7, 8, and 9, without repetition, are all the permutations of these four digits. There are 24 possible combinations, including numbers like 6789, 6798, 6879, and so on. Essentially, any arrangement of these four digits constitutes a valid four-digit number.
The greatest 4-digit number with no repeated digits is... 9876
18 (and 6 more starting with a 0).
9876 is the largest four digit number you can make if all the digits must be different.
Find a four digit number whose digits will be reversed when multiplied by nine?
There is no such number. If the four digits are even, the entire number is even, not odd.
you take the four digits and multiply 4 by 4 you get 16 digits
To form a four-digit number using the digits 1, 2, 3, 4, 5, and 6 without repeating any digits, you can choose the first digit in 6 ways, the second digit in 5 ways, the third digit in 4 ways, and the fourth digit in 3 ways. Therefore, the total number of four-digit combinations is calculated as (6 \times 5 \times 4 \times 3 = 360). Thus, 360 different four-digit numbers can be formed.