SOLUTION: For a 5 digit number how many combinations are there if one number must repeat? Also what about if two numbers must repeat?

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Question 866909: For a 5 digit number how many combinations are there if one number must repeat?
Also what about if two numbers must repeat?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
If one number must repeat it's like a 4 digit number.
N=10%2A10%2A10%2A10=10000
If two numbers must repeat, it's like a 3 digit number.
N=10%2A10%2A10=1000