All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars
 perplexus dot info

 Bored student (Posted on 2019-08-30)
One day an extremely bored student began writing down the positive integers in order: 1,2,3,... When she got to 20 she noticed that she had used the digit 1 twelve times (once each for 1,10,12,13,...,19 and twice for 11). She asked herself if there was some number n (greater than 1) such that in writing down the integers from 1 to n she would have used the digit 1 exactly n times.

Is there such an n?
If so, is there a largest such n?
What if the digit 1 is replaced by another digit?
What if we work in a number base other than base 10?

 No Solution Yet Submitted by Danish Ahmed Khan No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
 re: writer Comment 3 of 3 |
(In reply to writer by Leteyrs)

Every case study should be written with the objective of learning in author’s mind. The objective could be developed to influence knowledge level, develop a particular skill, challenge the student or improve one’s ability https://essaysservice.com/business-case-study.html.
 Posted by Kathy Huntley on 2020-01-02 06:49:29

 Search: Search body:
Forums (0)