rosh chodesh

Question

What is the halacha if a person reminds himself the night after rosh chodesh that in all the tfilos of r"c the person didn't say any yala vyavo ,hallel, musaf . Is there a way how to be that mtaken ?

Answer

Answered by Chaim Yisrael Abadi

He should always daven with a minyan and he will remember when they announce it. CYA