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The student opens a mathematics book to two facing pages the product of the page is 4160 find the page numbers?
Wiki User
∙ 2009-12-20 17:03:47
The two page numbers are 64 and 65. 64 x 65 = 4160.
Wiki User
∙ 2009-12-20 17:03:47
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A student opens a mathematics book to two facing pages. The product of the pages numbers is 420. Find the page numbers?
If one of the pages is numbered p, the other is p+1. So p*(p+1) = 420 That is, p2 + p - 420 = 0 which factorises as (p - 20)*(p + 21) = 0 That implies that p = 20 or p = -21. Assuming that pages do not have negative numbers, p = 20 and then the other page is p+1 = 21.
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When opening a book the product of the page numbers of the facing pages was 6162 what are the numbers of the pages?
The formula would be: X(X+1)=6162. X^2+X = 6162. X^2+X-6162 = 0; Factor this. (X+79)(X-78)=0. X+79=0 or X=-79; impossible. X-78=0; X=78; first page. Second page X+1=79. Therefore page numbers are 78 & 79. Check: 78*79=6162.
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A student opens a mathematics book to two facing pages. The product of the pages numbers is 420. Find the page numbers?
If one of the pages is numbered p, the other is p+1. So p*(p+1) = 420 That is, p2 + p - 420 = 0 which factorises as (p - 20)*(p + 21) = 0 That implies that p = 20 or p = -21. Assuming that pages do not have negative numbers, p = 20 and then the other page is p+1 = 21.
A student opens a mathematics book to two facing pages the product of the page numbers is 210. Find the page numbers?
Simple!A x B = 210Think:If 10 x 10 = 100 and 20 x 20 = 400 than the closest is 15 x 15 = 225So, if we used 15 multiplication.Take (225-210= 15)So, the answer is14 x 15 = 210The answer is page 14 and 15. :)Answer provided by Elson Ng
A student opens a mathematics book to two facing pages The product of the pages are 2550 Find the numbers?
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