If ravi binded his book and the binder cut the pages of the book , ravidecided to mark the pages by himself own , what he found that number of threeappears 61 times find of number of pages

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Poulami

  • Jan 31st, 2006
 

i think the book has 503 pages.as 3 comes 12 times in 100,if we divide 60 by 12 then we get 5 that means 500 pages.and for 61 3's its 503 pages.

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tamilselvan

  • Feb 4th, 2006
 

300 pages

3 will appear 20 times in 100 (3.13.23.30.31.32.33.34.35.36.37.38.39.43.53.63.73.83.93)

similarly 3 will appear 60 times in 299

61 time is 300 henace 300 pages

LeomariaPrakash

  • Mar 1st, 2006
 

in 100 3 appears 19 times so 19+19+20+3==61

100+100+100+3=303

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divya

  • Apr 5th, 2006
 

The correct answer is 300

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Arun

  • Apr 26th, 2006
 

yes,the correct answer is 300 pages

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sreelatha

  • Apr 28th, 2006
 

the ans is 19+19+19+4=61ie 330 pages.plz send me the reason and explain if the ans is wrong.

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Gauri

  • May 14th, 2006
 

Between 1 to 100 you get 19 nos. having 3 (like - 3 , 13 , 23 , 30 ,31,32,........39,43,53 , ......93)So 19*3=57 times we get nos. having 3 in 100*3 pages.....where last page no is 293...then comes ......300 , 301 , 302 , 303 ......which are next 4 pages to give 57+4=61 pagesSo answer is 303 pages...I hope i have explained it thoroughly........regards,Gauri

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Gauri

  • May 14th, 2006
 

Between 1 to 100 you get 19 nos. having 3 (like - 3 , 13 , 23 , 30 ,31,32,........39,43,53 , ......93)So 19*3=57 times we get nos. having 3 in 100*3 pages.....where last page no is 293...then comes ......300 , 301 , 302 , 303 ......which are next 4 pages to give 57+4=61 times appearance of 3 .So answer is 303 pages...I hope i have explained it thoroughly........regards,Gauri

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Suneedhi

  • May 30th, 2006
 

Its 300 pages.

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ArunKumar A.R

  • Jun 1st, 2006
 

my answer is 303 pages.because there are 20 3's in 1-93.likewise 20 in 94-186 and so on.thus total no of pages are 303

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kedar

  • Jun 8th, 2006
 

the answer is 300

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ARUN

  • Jun 10th, 2006
 

Answer is 300 pagesb/w 1 to 93 = 3,13,23,30,31,32,33,34,35,36,37,38,39,43,53,63,73,83,93 = 20 threes (Note 33 has 2 threes) b/w 94 to 193 = 20 threesb/w 194 to 293 = 20 threesso b/w 1 to 293 we have 60 threesthen 61 three will appear at page no 300.

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waseem

  • Jun 21st, 2006
 

i think 303 pages as there r 61 3's in b/w 01-303

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anironic

  • May 8th, 2008
 

Sreelatha is right .Its 330.
Its 19+19+19 and 3 appears 4 more times that is for the next 30 pages

So the answer is 330

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rathnaraja

  • May 30th, 2008
 

there are 19 3's b/w 1 to 100

therefore there are 57 3's b/w 1 to 299(i.e 19+19+19=57)

then from 300 to 303 counts four 3's

therefore 57+4=61

hence the book contains 303 pages

 

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anon

  • Oct 11th, 2011
 

3121

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Ria Aggarwal

  • Jul 27th, 2014
 

3 will appear 20 times from 1 to 100.
3 will appear 20 times from 101 to 200.
3 will appear 20 times from 201 to 299.
total 60 times up to 299.
61 times up to 300

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