13.7 This is chance Strategy and choice problem . These are the all information that I have

13.7 Before 1966, the U.N. Security Council consisted of 11 members, 5 permanent and 6 nonpermanent. A total of 9 yes votes including all 5 permanent members was required for passage of a measure. Find an equivalent weighted voting system for the original U.N. Security Council. Did a given permanent member have more or less power after 1966