Question 155992: The product of three consecutive odd numbers is 6,783
Answer by checkley77(12844)   (Show Source):
You can put this solution on YOUR website! x(x+2)(x+4)=6,783
A SHORT CUT METHOD DEVELOPED BY MY BROTHER (A MATH WIZARD) IS:
TAKE THE CUBERT OF THE PRODUCT THUS:
CUBERT6,783=18.93
NOW ROUND THIS ANSWER UP TO THE NEXT INTEGER.
18.93 ROUNDED UP=19.
THIS IS THE MIDDLE ODD NUMBER.
PROOF
17*19*21=6,783
6,783=6,783
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