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How many 4 digit combinations can be made from 10 numbers with out repeating?
Wiki User
∙ 10y ago
The answer is 10C4 = 10!/[4!*6!] = 210
Wiki User
∙ 10y ago
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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.
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 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 1 thru 49 how many 6 digit combinations can be made?
Using the formula n!/r!(n-r)! where n is the number of possible numbers and r is the number of numbers chosen, there are 13983816 combinations of six numbers between 1 and 49 inclusive.
How many numbers can you make from 650271 without repeating a digit?
1,956 different numbers can be made from 6 digits. You can calculate this by using the permutation function in a summation function, like this: Σ6k=1 6Pk = 6P1+6P2+...+6P5+6P6 What this does is calculate how many 1 digit numbers you can make from 6 digits, then how many 2 digit numbers can be made from 6 digits and adds the amounts together, then calculates how many 3 digit numbers can be made and adds that on as well etc.
How many 4 digit numbers combinations can be made using 1234567?
Not repeating, it is 7*6*5*4 which is 840 ways ---- There are 7 choices for each of four digits, right? 74 = 2401
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.
How many different combinations can be made of 9 digit social security numbers can be made?
10 Combinations (if order doesn't matter). 3,628,800 Possiblilities (if order matters).
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
How many three digit combinations can be made from the numbers 9 3 and 1?
6 ways: 931,913,139,193,391,319
If using numbers 1 through 4 how many different 4 digit combinations can be made?
10,000
How many 5-digit numbers can be made only using the numbers 1 2 3 4 5 with out repeating a number twice example 12345 12354 12435?
120 5-digit numbers can be made with the numbers 12345.
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 3 digit numbers can be made using 3 4 5 6 7 with repeating the numbers?
The general formula is to square the number of digits it could be (in this case 5) by how many spaces there are. So in this case it would be 53 = 125 possible combinations.
How many 2 digit combinations can be made from 3 numbers combined?
Only three: 12, 13 and 23. Remember that the combinations 12 and 21 are the same.
