0
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.
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How many combinations of 4 numbers are there in 7 numbers?
Oh, isn't that a happy little question? Let's see here... To find the number of combinations of 4 numbers out of 7, we can use a simple formula: 7 choose 4, which is calculated as 7! / (4! * (7-4)!). So, there are 35 unique combinations of 4 numbers that can be made from a set of 7 numbers. Isn't that just delightful?
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