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The numbers 1, 6, 11, 16, ... are written in order in a book, 50 to a page, beginning on page 1. The number 12346 will be written on page A)49, B)51, C)48, D)47, E)50

 

I've been working a long time, and I don't know what to do.

 Sep 19, 2020
 #1
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The series starts with 1 and then counts up by 5's.  

 

There are 50 numbers to a page so the last number on page 1 would be 251 ~ aka 250 + 1 

                    add the next 50 x 5 and the last number on page 2 would be 501 ~ aka 500 + 1  

                                                          the last number on page 3 would be 551 ~ aka 750 + 1

                                                          and so on.  

 

We can see that the last number on any page is (the page number times 250) + 1  

 

So, which page would contain 12346 

 

If you divide 12346 by 250 you get 49.384 so that locates 12346 on the first page past 49, or page 50  

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 Sep 19, 2020
 #2
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It's me again.  I made a typo.  The third line should read  

 

                                               the last number on page 3 would be 751 ~ aka 750 + 1   

Guest Sep 19, 2020
edited by Guest  Sep 19, 2020

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