What would come in place of the question mark (?)?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 350
In each triangle the two numbers at the base are built from the cube of the top number: the left one is the cube plus the top number and the right one is the cube minus it.
Triangle A: \(5^3=125\); \(125+5=130\) and \(125-5=120\)
Triangle B: \(6^3=216\); \(216+6=222\) and \(216-6=210\)
Triangle C: \(7^3=343\); \(343-7=336\) fits the right-hand number, so the missing left number is \(343+7=350\)