Posted by Kay on Saturday, August 1, 2009 at 5:55pm.
A student opens a mathematics book to two facing pages. The product of the pages numbers is 420. Find the page numbers.
The first page is ? and the second page is ?
Thank you

math  bobpursley, Saturday, August 1, 2009 at 5:58pm
n(n+1)=420
solve for n 
math  Ms. Sue, Saturday, August 1, 2009 at 5:59pm
The square root of 420 = 20.49
Let's try 20 and 21 as the facing pages. Is the product 420?