A book has 250 pages.how many digits have been used to print page no.s of book
Answers
642 Digits have been used to print 250 Pages
Step-by-step explanation:
A book has 250 pages
1 - 250 Numbers will be used
Single Digit number - 9 ( 1- 9)
Two Digit Numbers 90 ( 10 - 99)
Three Digit Numbers 151 ( 100 - 250)
Number Of Digits used = 9 * 1 + 90 * 2 + 151 * 3
= 9 + 180 + 453
= 642
642 Digits have been used to print 250 Pages
Learn more:
Mrs Biczo stated that "a total of 690 digits were used in numbering ...
https://brainly.in/question/12308532
A printer number the pages of blook starting with 1 and uses 3089 ...
https://brainly.in/question/10566941
Answer:
642
Step-by-step explanation:
For pages 1-9, there are 9 pages (1 more than 9-1 because you have to count both ends. It takes 1 digit each = 9.
For pages 10-99, there are 90 pages. Similar to the first few pages, this is 1 more than 99-10. We could arrive at this page count by adding 90 to 9, too. At 2 digits each = 90*2 = 180.
So far we've counted up 99 pages. Since there are 250 pages in total, there must be 151 more pages to number. It takes 3 digits each = 151*3 = 453. Total = 9 + 180 + 453 = 642
Always check your work, so in this case check whether the total pages = 250.
9 + 90 + 151 = 250.