Problems on Numbers - Quantitative Aptitude (MCQ) questions for Q. 790

Q.  If in a book a total of 3209 digits are used for numbering, then find out the total number of pages in the book.
- Published on 06 Jul 15

a. 1079
b. 1000
c. 1100
d. 1075

ANSWER: 1079
 
Number of digits used in 1 digit numbers = 1*9 = 9
Number of digits used in 2 digit numbers = 2*90 = 180
Number of digits used in 3 digit numbers = 3*900 = 2700
Number of digits used in 1 digit numbers = 3209 – (9+180+2700) = 320
Hence, number of pages with 4 digit number = 320/4 = 80
Total number of pages = 1079

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    Discussion

  • Fuad    -Posted on 12 Nov 17
    I am not able to understand why he used number 9?
  • arathi   -Posted on 02 Sep 17
    I am unable to get it,kindly explain it clearly.
  • vyankat pawar   -Posted on 03 Mar 16
    am not understand
  • Abhishek Gupta    -Posted on 03 Dec 15
    I Am not agree with you Vishakha
  • vishakha   -Posted on 30 Sep 15
    I am not able to understand the answer, kindly explain it clearly

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