1. Some equations have been solved on the basis of a certain system. Find the correct answer for the unsolved equation on that basis.
If9*7 = 32, 13*7 = 120, 17*9 = 208, then 19 * 11= ?
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By: anil on 05 May 2019 02.00 am
The pattern followed above is : $$a*b = (a+b) (a-b)$$ => 19*11 = (19-11) (19+11) = 8*30 = 240
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