All Znors are Zmuds. Half of the Zorfs are Zmuds. There are 24 Zorfs. No Zlogs are Znors. There are 16 Zorfs that are not Zlogs. All Zlogs are Zmuds. Half of the Zlogs are Zorfs. No Znorfs. There are 9 Zmuds that are not Znors or Zorfs or Zlogs. There are 15 Znors. How mant Zmuds are there? How many Zuds are also Zlogs and Zorfs?
