The value of 97 × 103 is _________.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 9991.
Concept Used:
(a - b)(a + b) = a2 - b2 ....(i)
Explanation:
According to the given question,
97 × 103 = (100 - 3)(100 + 3)
Now using the formula from equation (i), we get
⇒ (100 - 3)(100 + 3) = 1002 - 32
⇒ 10000 - 9 = 9991
Hence the value of 97 × 103 is 9991.