0 votes 0 votes Q.1) Find seven digit number which is divisible by 3 in which repitition is not allowed. BASANT KUMAR asked Oct 11, 2018 BASANT KUMAR 482 views answer comment Share Follow See all 10 Comments See all 10 10 Comments reply Swapnil Naik commented Oct 11, 2018 reply Follow Share Just wrote random number 1234567 sum turned out to be 28, hence decided to add 2 more 1234569 0 votes 0 votes BASANT KUMAR commented Oct 11, 2018 reply Follow Share it become more complicated if i used this method ,can you give final answer ?? 0 votes 0 votes Swapnil Naik commented Oct 11, 2018 reply Follow Share How it becomes complicated? A number to be divisible by three sum of its digits should be divisible by 3. best is to write 3333333 but then numbers are not supposed to be repeated, so I wrote 1234567 I came to know sum is 28 so I can replace any number by number+2 such that number won't repeat 1234587 or 1234569 would be possible outcomes. 0 votes 0 votes BASANT KUMAR commented Oct 11, 2018 reply Follow Share here you miss the position of zero .suppose the number 102345 now addition of 3 take place not 2. 0 votes 0 votes Swapnil Naik commented Oct 11, 2018 reply Follow Share Yes it will be depend on situations 102345 don't add 3 as it will be repeated but you can add 6 1023456 or 1023459 0 votes 0 votes Utkarsh Joshi commented Oct 11, 2018 reply Follow Share swapnil naik, what exactly do you want to say?? whats the answer?? 0 votes 0 votes Swapnil Naik commented Oct 11, 2018 reply Follow Share Utkarsha there are multiple answers possible. Question only says find a 7 digit number 0 votes 0 votes Utkarsh Joshi commented Oct 11, 2018 reply Follow Share oh!! I was thinking over this over 5 mins! I thought question is HOW MANY 7 digit numbers rep not r allowed div by 3. Its not an easy problem.was wondering why "BASIC QUESTION" he has written! 0 votes 0 votes BASANT KUMAR commented Oct 11, 2018 reply Follow Share we have multiple option but only one answer is possible.is it not basic?? 0 votes 0 votes srestha commented Oct 11, 2018 reply Follow Share it is a ambiguous question there are many such numbers 0 votes 0 votes Please log in or register to add a comment.