SOLUTION: For how many natural numbers less than 105 is the sum of their digits equal to 10?
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Question 788393: For how many natural numbers less than 105 is the sum of their digits equal to 10?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
From 1 to 10 there are none, from 11 to 20, and for each complete set of ten after that, there is 1, and none in what remains, so altogether there are 9
19, 28, 37...and so on.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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