Question 43

Choose the correct option so that the relationship between all pairs of numbers is same.
7*10 = 64, 3*8 = 14, 11*12 = ?

Solution

7*10 = 64 => 7 X 10 - 2(10-7) = 64
3*8 = 24 => 3 X 8 - 2(8-3) = 14
=> 11*12 = 11 X 12 - 2(12-11) = 132 - 2 = 130

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