Question
If 35 # 24 = 2 and 45 # 38 = 17, then 53 # 47= ?
Solution
The 3rd number is obtained as follows: Product of the 1st digit of the 1st number and the 2nd digit of the 2nd number is subtracted from the product of the 2nd digit of the 1st number and the 1st digit of the 2nd number. In 35 # 24: {(3 × 4) − (5 × 2)} = {12 – 10} = 2 In 45 # 38: {(4 × 8) − (5 × 3)} = {32 – 15} = 17 In 53 # 47: {(5 × 7) − (3 × 4)} = {35 – 12} = 23
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