It's been observed that LR has shifted in that it's no longer the golden rule of "10 in 10 mins" or "15 in 15 mins". As you have experienced, questions as early as #5 can be the 2nd hardest question in the section.
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@josephellengar said:
My rule (typically get 0-2 wrong ... if I have a basic rule that makes no more than ... />
If you've got a rule like "L must go either ... decision point—is there a rule that either determines with great ...
... there is only one 'split rule', which is the case the ... the game; usually, one split rule will have a larger impact ... with experience, but a rough rule of thumb is the number ...
In my understanding the OR rule indicates that one of them MUST happen. It cannot be that both cannot happen. It's either M-J or J-N. One of these two must happen.
A or B but not both means one must be in at the exclusion of the other.