could someone please help me translate the embedded conditional: B10+ → (OpNo → R) to English? I keep reading it in my head as B10+ and OpNo → R. I know that they are logically equivalent but I just can't wrap my head around B10+ → (OpNo → R). Or can I just skip the whole embedded conditional format and go straight to simplified version?

I am slightly confused about what happens when uncertain terms such as likely are used in conditional arguments. Since the argument follows a traditional conditional argument form, but uses the term likely, could it ever be considered valid? For example, if the second premise was "It is not likely that Jackie's second baby is born before its due date," and the conclusion was "so Jackie's first child was not born before its due date either," would this be a valid argument? It sounds weird because of the term "likely," but just wanting to know if an argument in conditional form can be valid even when it uses uncertain langauge.