Question : The value of 97 × 103 is _________.
Option 1: 7999
Option 2: 9991
Option 3: 8991
Option 4: 9981
Correct Answer: 9991
Solution :
97 × 103
= (100 - 3) × (100 + 3)
= 100
2
- 3
2
= 10000 - 9
= 9991
Hence, the correct answer is 9991.
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