rythm, i was also confused.. ok lets consider 4,3,3 ta answer hoi ta, so the house number becomes 10 hoina, now there seems to be only one solution of 10, so hence, the census guy isnt confused..so 4,3,3 is the answer..TARA, in the question it says census guy was confused, so for the census guy to be confused there had to be something wrong with the house number hoina ta...tesaile that house number is 13, kina bhane it is the only number that has 2 answers and hence got our census guy confused...so he came back for more hint... now if you still dont get it, read the question and read this again, u will certainly get it :) BTW, no one has solution for my problem?? is it too easy for you all?? ki k ho??