The sum of the page numbers of two facing pages of a book is 85. what are the page numbers ? If the sum is not given ,but the product is given to be 1806,how will you find the page number?
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Answer:
By taking the factors of 1806
Factors of 1806 =1, 2, 3, 6, 7, 14, 21, 42, 43 , 86, 129, 258, 301, 602, 903, 1806.
step 2
taking the numbers less than 85
=1, 2, 3, 6, 7, 14, 21, 42, 43
step 3
taking the consecutive numbers (because they are facing)
42,43
Check
42+43 = 85
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