+118687 what are the possible combonations of 736,885,939?
I assume you mean how many whole numbers can be made with those digits.
If that is what you want then you should have said
"How many permutations are there of those individual digits."
http://www.mathwarehouse.com/probability/permutations-repeated-items.php
There are 9 digits and 7, 6, 5, 3,3, 8,8, 9,9
\(\frac{9!}{2!2!2!} =\frac{9!}{8} \)
+271 I have the same solution as melody but i wanted to quickly explain that solution.
there are 9 digits.
9! is the solution if we didn't have repeated digits. but there are.
there are three pairs of digits. these digits can have the same thing if they are arranged in different ways.
2!
so there are less combinations now. these double digit combinations can combine together to make 2!2!2!. so (9!)/2!2!2! is the solution which is 45360.
