Conversation so far:
what is the repetition of a musical pattern is known as
An ostinato is a motif or phrase that persistently repeats in the same musical voice, frequently in the same pitch.
what is the symbol for the repetition in music
That which is to be repeated is generally included within the sign of two or four dots in the spaces.

Question: does the number of symbols make a difference
Self-contained rewrite: does the number of repeat symbols make a difference