Quorum
This question is answered in the question, "How many compose a Lodge?" in the formal opening of each Degree; the number composing a Lodge is a quorum for any Degree work, or for the transaction of any business. In opening a Lodge, five is the minimum; for the work of the Entered Apprentice Degree, seven, although the ritual places the number for opening a Lodge of Master Masons at three.
~~ooOoo~~
This page is adapted from the Glossary at Phoenixmasonry — Used with permission.