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10,000,000,000,000 This would be the number of permutations on a 13-position combination lock, for example. In the first position there would be one number out of ten possibilities (0-9). Next to any one number there would be any one of ten again. So in the first two positions there are 10 x 10 possible combinations i.e. 10^2 (= 100). In the third position there would be 10 more possibilities against the previous 100 possibilities, i.e. 100 x 10, that is: 10^3 (= 1000). So, for a thirteen digit lock, there would be 10^13 possibilities, which is 1 followed by thirteen zeros, as shown above. Of course, if 'numbers' with leading digits e.g. 0 000 087 654 321, and all zeros, are not counted as valid 'numbers' then there are 13 less possibilities. i.e. There are only 9,999,999,999,987 possible ' numbers'.
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How many different three digit combinations can be made from numbers 0 1 2 3 4 5 6 7 8 9?
There are 720 combinations if you use each of the digits only once per combination.
How many 4 digit numbers can be made by he digits 0123 using the digit once?
2
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 five digit whole numbers can be made?
90000
How many two digit numbers can be made using 0-9?
9
How many sets of 3 numbers can be made out of 12 different numbers?
You can select 12 numbers for the first digit, 11 numbers for the second digit, and 10 numbers for the third digit; so 12*11*10 = 1320 sets of 3 numbers can be made out of 12 different numbers.
How many different 9 digit combination can be made using numbers zero through nine?
Just think of how many possibilities you have for each digit. 10x9x8x7x6x5x4x3x2 or 10 factorial is 3 628 800.
If using numbers 0 through 9 how many different 10 digit combination can be made?
* 10^10 * = ten billion (US), or * ten thousand million (UK)
How many different numbers can be made from 742 a digit can be used only once in a number?
6
If using numbers 1 through 4 how many different 4 digit combinations can be made?
10,000
If using numbers 1 through 8 how many different 4 digit combinations can be made?
15
How many 3 digit numbers can be made with numbers 1 - 9?
999-111=888 888 3 digit numbers can be made with numbers between 1 - 9
How many 6 digit combinations can be made from numbers 1 2 3 4 5 6?
Just the one. The order of the numbers does not matter in a combination so that 123456 is the same combination as 245136.
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 four digit numbers can be made from 1123?
There are 12 such numbers.
How many different 3 digit house numbers could be made using numerals 4 7 8?
Six.
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.
