Question
If 84 × 13 = 8, 37 × 13 = 6, 26 × 11 = 6, then 56 ×
22 = ?Solution
The logic is: 
84 x 13 = 8             (8 +4) – (1+3) = 12-4 =8 
37 x 13 =6         (3+ 7) – (1+3) = 10-4 =6 
26 x 11 =6              (2+ 6) – (1+1) = 8 -2 = 6 Similarly, 
56 x 22 = ?             (5 + 6) – (2+2) = 11-4 =7 Hence ‘7’ is the correct answer
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