Solve the following
113 × 87 = ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 9831.
| Understanding/Application |
|
113 × 87 (a + b) (a - b) = a2 - b2 |
|
(100 + 13) (100 - 13) = 1002 - 132 = 10000 - 169 = 9831 |