Will annihilation occur when two electrons and a positron are released at once to collide against each other?

Question

suppose free Two electrons and a positron are released at once in space to collide against each other,will there be annihilation ?or there will be no annihilation due to imbalance of matter and antimatter?

Answer 1

Charge is conserved. You have two electrons of charge -1, a positron of charge +1, so the total charge is -1. Whatever the end state is, it will have charge -1. You can have the positron annihilate one electron, for an end state of a single electron, total charge -1.