I just returned from taking the ABO exam (long story, I've taken it before, I've taught the review course many times). What was striking was the fact that one question appeared 3 times; not restated or reconfigured, but word-for-word. Another question appeared twice, again word-for-word. Yet another was repeated but with the example Rx on one line, comma delimited, and then with OD and OS on 2 lines like an Rx pad. Why would this repetition be useful to test givers?