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If using numbers 1 through 9 how many 4 digit combinations can be made?
Wiki User
∙ 13y ago
You are not using the digit zero (0), so there are nine possible digits. If repetition is allowed and order is important (like a 4 digit combination lock), then the answer is 94 = 6561. If repetition is not allowed and order is important, then you have 9! / (9-4)! = 9*8*7*6*5 = 3024.
Wiki User
∙ 13y ago
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How many different 3 digit combinations can be made using numbers one through nine?
Through the magic of perms and coms the answer is 729
If using numbers 0 through 9 how many different 2 digit combinations can be made?
If there are no restrictions on duplicated numbers or other patterns of numbers then there are 10 ways of selecting the first digit and also 10 ways of selecting the second digit. The number of combinations is therefore 10 x 10 = 100.
How many different four digit combinations are there of the numbers zero through nine and using one number twice in the combination?
There are 360 of them.
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.
What are the different combinations of three digit numbers using 0-9?
9
If using 7 single digit numbers how many different combinations can you get?
Number of 7 digit combinations out of the 10 one-digit numbers = 120.
How many 7 digit combinations can be made using the numbers 1 through 9?
It is: 9C7 = 36
If using numbers 0 through 9 how many different 4 digit combinations can be made?
66
If using numbers 1 through 8 how many different 4 digit combinations can be made?
15
If using numbers 1 through 4 how many different 4 digit combinations can be made?
10,000
How many different 3 digit combinations can be made using numbers one through nine?
Through the magic of perms and coms the answer is 729
How many 4 digit combanations using the numbers 1-7?
There are 840 4-digit combinations without repeating any digit in the combinations.
If using numbers 0 through 9 how many different 2 digit combinations can be made?
If there are no restrictions on duplicated numbers or other patterns of numbers then there are 10 ways of selecting the first digit and also 10 ways of selecting the second digit. The number of combinations is therefore 10 x 10 = 100.
How many different four digit combinations are there of the numbers zero through nine and using one number twice in the combination?
There are 360 of them.
If using numbers 0 through 9 how many 3 digit combinations?
1,000. The list looks just like the counting numbers from 000 to 999 .
How many 4 digit combinations can be made using numbers 1 2 3 4 6?
120 combinations using each digit once per combination. There are 625 combinations if you can repeat the digits.
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.
