0 votes 0 votes How many integers are there in the set {1,2,3,…..,1000} with no digit being repeated? Combinatory combinatory number-system + – TusharKumar asked Dec 24, 2022 • retagged Dec 25, 2022 by makhdoom ghaya TusharKumar 312 views answer comment Share Follow See all 3 Comments See all 3 3 Comments reply Sunnidhya Roy commented Dec 25, 2022 i edited by Sunnidhya Roy Dec 25, 2022 reply Follow Share 1 digit = 9 2 digits = 9 x 9 3 digits = 9 x 9 x 8 1000 is the only 4 digit number but it has repeated 0's so not considered. Total = 738. 3 votes 3 votes TusharKumar commented Dec 25, 2022 reply Follow Share 4 digit number is not counted as there are repeated digits. Btw thanks I'm not considering 0 in 2 digits and 3 digits that's my mistake. 0 votes 0 votes Sunnidhya Roy commented Dec 25, 2022 reply Follow Share Yeah sorry about that, I have updated the comment. 0 votes 0 votes Please log in or register to add a comment.
