Three of these letter groups follow the same pattern. Which one is the odd one out: LNO, IKM, JLN, ACE?

💡 Solution & Explanation

In IKM, JLN, ACE, each letter is 2 places after the one before it (for example I = 9, K = 11, M = 13). In LNO the steps are 2 and 1, so it is the odd one out.