Find the odd one out that does not belong to the group.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 14, 11, 13
In each group, look at how the second and third numbers are made from the first.
Option (1) 20, 16, 18: \(20-4=16\), then \(16+2=18\)
Option (2) 16, 12, 14: \(16-4=12\), then \(12+2=14\)
Option (3) 14, 11, 13: \(14-3=11\), then \(11+2=13\); the first step is \(-3\), not \(-4\), so 14, 11, 13 is the odd one out
Option (4) 18, 14, 16: \(18-4=14\), then \(14+2=16\)