Three of these letter groups follow the same pattern. Which one is the odd one out: RTV, CEG, NPR, EGH?

💡 Solution & Explanation

In RTV, CEG, NPR, each letter is 2 places after the one before it (for example R = 18, T = 20, V = 22). In EGH the steps are 2 and 1, so it is the odd one out.