If 64 x 52 = 17, 48 x 56 = 23 and 74 x 35 = 19, then 84 x 37 = ? - mathselab.com

If 64 x 52 = 17, 48 x 56 = 23 and 74 x 35 = 19, then 84 x 37 = ?


Question


If 64 x 52 = 17, 48 x 56 = 23 and 74 x 35 = 19, then 84 x 37 = ?


A. 20
B. 22
C. 28
D. 30


Answer: B. 22


Solution:

As,               64 x 52 

 (6 + 4) + (5 + 2) = 17

                    48 x 56  (4 + 8) + (5 + 6) = 23

and               74 x 35  (7 + 4) + (3 + 5) = 19

Similarly,       84 x 37  (8 + 4) + (3 + 7) = 22






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