Select the missing number.

The correct answer is Option (4) → 16

In each circle, the top number is half the product of the two lower numbers.

• First circle: \(14\times12=168\), and \(168\div2=84\)

• Second circle: \(18\times9=162\), and \(162\div2=81\)

• Third circle: the product must be \(88\times2=176\), so the missing number is \(176\div11=16\)