In a mathematical operation, plus means multiplication, minus means plus, divided means minus and multiplication means sum of digits of two numbers. Follow these rules and solve the following example.
(6 × 7) – (8 × 9) – (10 × 11) = ?
Answer & explanation
Correct answer: option 2
(6 × 7) – (8 × 9) – (10 × 11)
⇒(6 + 7) + (8 + 9) + (10 + 11)
⇒ 13 + 17 + 21 = 51