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You can select 9 numbers for the first digit, 8 numbers for the second digit, and 7numbers for the third digit; so 504 (e.g. 9*8*7) different three digit numbers can be written using the digits 1 through 9.

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โˆ™ 2009-10-09 21:36:26
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Q: How many different three digit numbers can be written using the digits 1 through 9?
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Related questions

How many different 2 digit odd numbers can be formed from the digits 1 through 8 if no digits are repeated in a number?


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5 x 10 x 5 = 250 different numbers, assuming there is no limit to each digits' use.

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8 to the 5th power

How many different numbers can you make using 5 different digits?

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Usually if the number is a three or more digits, then it is written as the digits, otherwise it is written as words.

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How do you compare whole numbers through the millions?

A positive number is greater than a negative number. If both numbers are positive, the longer number - the one with more digits - is larger. If both have the same number of digits, compare the digits from the left, one at a time until you find one that is different. The one with the larger digit in this last comparison is the larger number.

How many 8 digit palindromic numbers are there?

a 8-digits palindromic number is a number consisting of a 4-digits number written and then written backward, i.e. 1234 4321 so there are as many palindromic 8-digits numbers as 4-digits numbers so from 1000 to 9999, so there are 8999 palindromic 8 digits number (I assumed that 00011000 is not to be considered as a valid 8 digit number)

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There are a lot of possibilities. The second digit can be 2 through 6, the third digit can be 3 through 7 as long as it is larger than the second digit. What we have so far: 1 _ _ 89

What are 8 digit odd numbers with all digits different?

There are only five distinct odd digits.

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9!/(5! x 4!) = (9 x 8 x 7 x 6) / (4 x 3 x 2) =126 if all digits have to be different. If repeated digits are allowed then it is 95 ie 59049.

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This cannot be answered. This will have to be written to where it can be understood.

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Expressed in digits, this is written 200,000.

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