If you are assuming you can repeat any of the numbers then:
nx
where n=number of options and x= number of spaces
using the formula assuming all numbers 0-9 then:
1010
10,000,000,000 is your answer.
If numbers can not repeat and have to be used we use the formula:
n!
Where n is the number of options.Since you want 10 numbers we will do 10!
10!
10*9*8*7*6*5*4*3*2*1
362880 is your answer.
If the numbers are allowed to repeat, then there are six to the fourth power possible combinations, or 1296. If they are not allowed to repeat then there are only 360 combinations.
how many combinations of 4 numbers are there in 7 numbers
Just one. * * * * * Depends on how many numbers are on each ring. If there are x numbers, then the total number of combinations (actually they are permutations) is x*x*x or x3.
There are: 9C6 = 84 combinations
10 Combinations (if order doesn't matter). 3,628,800 Possiblilities (if order matters).
The number of combinations of six numbers that can be made from seven numbers will depend on if you can repeat numbers. In all there are over 2,000 different numbers that can be made.
9!/5! or 3024
8C6 = 28
252 combinations, :)
2 to the 7th power = 128 * * * * * No. That is the total number of combinations, consisting of any number of elements. The number of 2 number combinations is 7*6/2 = 21
None. You do not have enough numbers to make even one combination.
You can make 5 combinations of 1 number, 10 combinations of 2 numbers, 10 combinations of 3 numbers, 5 combinations of 4 numbers, and 1 combinations of 5 number. 31 in all.
20
There are 8,592,039,666 combinations of 6 numbers out of 138 numbers, like the numbers from 1 to 138.
There are a huge number of combinations of 5 numbers when using the numbers 0 through 10. There are 10 to the 5th power combinations of these numbers.
If every number can be used as many times as you like, there are 104 = 10000 different combinations. If each number can only be used once, there are 9!/(9 - 4)! = 5040 combinations.
There are infinitely many numbers and so infinitely many possible combinations.