Three of these letter groups follow the same pattern. Which one is the odd one out: CEG, IKN, OQS, KMO?

💡 Solution & Explanation

In CEG, OQS, KMO, each letter is 2 places after the one before it (for example O = 15, Q = 17, S = 19). In IKN the steps are 2 and 3, so it is the odd one out.