The 10th plague- was it first born whether male or female that died, or only the male first born? Is there a source for this?

hey, could you tell me when tabernacles were first used ? shalom Benjamin

Why would a person paying a shiva call give a clock to the daughter of the deceased?

Dear Rabbi, In light of the Passover holiday coming, I am curious about something. On Passover, one of the foods that we eat is Matzo. On the side of the package that the Matzo comes in are the nutrition facts. When G-d "made" Matzo for the Jews (including Moses) the Matzo had to have had much more nutrition in it than it does today in order of them to survive. Especially since they traveled for 40 years. I guess my question is, am I correct in the assumption that the Matzo then, during those 40 years, is much different than it is now (today) nutritionwise? Thanks! -Jonathan

This is a follow up. Rabbi Lauffer said only Paro's daughter survived the 10th plague. However, I always learnt that only Paro (a firstborn) survived and secondly in Bo chapter 12 pasuk 29 it seems to say that Paro's son died- '...HASHEM SMOTE EVERY FISTBORN IN EGYPT, FROM THE FIRSTBORN OF PARO SITTING ON HIS THRONE...' Could you please explain.