In the begining of sefer bamidbar, the males between 20 and 60 are counted and it says that there are over 600,000 of them. Theoretically each, or most, of these people should have had a first-born ...
At a parshat hashavua shiur that I regularly attend, the rabbi has stated on multiple occasions that the bechorot (firstborn sons of Israel) were supposed to serve the purpose that the Leviim and ...
Assuming you follow the tradition that only first-born males are obligated to fast the day before Passover, do the males who have an older sister count as first-born or not? Wikipedia doesn't seem to ...