a book has 250 pages. how many digits have been used to print the page number of book?
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Answer: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
Hence ,642 Digits have been used to print 250 Pages
Answered by
0
9×1
+90×2
+151×3
=642
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