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98765.
752
In order to make the number as big as possible, you would want the greatest value digits in the greatest place value. Thus the first number would have to be 9. Once 9 has been used, the second number would have to be 8. Then the third number would have to be 7 and so on. Therefore, the greatest 9 digit number with 9 different digits is 987,654,321.
7,610 is.There are other possibilities, like (6)710 , but those are weird.
3333
7,610 or (6)710
8642
98765.
752
In order to make the number as big as possible, you would want the greatest value digits in the greatest place value. Thus the first number would have to be 9. Once 9 has been used, the second number would have to be 8. Then the third number would have to be 7 and so on. Therefore, the greatest 9 digit number with 9 different digits is 987,654,321.
7,610 is.There are other possibilities, like (6)710 , but those are weird.
descending order
3333
7642
write the largest number you can make using each of the digits 7,1,0,2, and 9 just once
Depends what you mean. Greatest number you can make with an expression with just 3's: 3^^^^^^^^^^^^^^^(infinite ^s)^^^^^^^^^^^^3. A similar number to this would be grahams number. It would take BILLIONS of years just to count how many digits graham's number contains!
Assuming you are treating each number as a number and not as an individual unit, the numbers you can make from these digits are 899, 989 and 998.