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Earn +20 ptsQ: Who made numbers 1 through 9?
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How many different three digit numbers can be written using the digits 1 through 9?
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.
How many 6 number combinations are there in the numbers 1 through 59?
9
How many three digit numbers can be made using numbers 1-9?
10
If using numbers 1 through 9 how many different 4 digit combinations can be made with no restrictions on order or repeats?
Each digit can appear in each of the 4 positions. There are 9 digits, therefore there are 9⁴ = 6561 such combinations.
How many 4 digit numbers can be made from 1 8 9 and 6?
ten
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