Venn Diagrams Three
1. Problem: Describe the regions in Venn diagrams for three sets with eight regions each.
2. For each problem, the three sets form overlapping circles dividing the universal set into 8 regions:
- Only in Set A
- Only in Set B
- Only in Set C
- In A and B only
- In B and C only
- In A and C only
- In all three sets
- In none of the sets
3. Problem 53: Women (W), Republicans (R), Chefs (C)
- W only: Women who are neither Republicans nor chefs
- R only: Republicans who are neither women nor chefs
- C only: Chefs who are neither women nor Republicans
- W and R only: Women Republicans who are not chefs
- R and C only: Republican chefs who are not women
- W and C only: Women chefs who are not Republicans
- W and R and C: Women who are Republican chefs
- None: People who are not women, Republicans, or chefs
4. Problem 54: Hockey players (H), Figure skaters (F), Men (M)
- H only: Hockey players who are not figure skaters or men
- F only: Figure skaters who are not hockey players or men
- M only: Men who are neither hockey players nor figure skaters
- H and F only: People who play hockey and figure skate but are not men
- F and M only: Men who figure skate but do not play hockey
- H and M only: Men who play hockey but do not figure skate
- H and F and M: Men who play hockey and figure skate
- None: People who are not hockey players, figure skaters, or men
5. Problem 55: Poets (P), Playwrights (Pl), Painters (Pa)
- P only: Poets who are not playwrights or painters
- Pl only: Playwrights who are not poets or painters
- Pa only: Painters who are not poets or playwrights
- P and Pl only: Poets who are also playwrights but not painters
- Pl and Pa only: Playwrights who are also painters but not poets
- P and Pa only: Poets who are also painters but not playwrights
- P and Pl and Pa: People who are poets, playwrights, and painters
- None: People who are none of these
6. Problem 56: Oceans (O), Bodies of salt water (S), Bodies of fresh water (F)
- O only: Oceans that are not classified separately as salt or fresh water bodies (usually oceans are salt water, so this may be empty)
- S only: Salt water bodies that are not oceans or fresh water
- F only: Fresh water bodies that are not oceans or salt water
- O and S only: Oceans that are salt water (typically all oceans)
- S and F only: Bodies that are both salt and fresh water (usually none)
- O and F only: Oceans that are fresh water (usually none)
- O and S and F: Bodies that are oceans and both salt and fresh water (none)
- None: Bodies that are neither oceans, salt water, nor fresh water
7. Problem 57: Words that begin with t (T), Nouns (N), Words with fewer than 5 letters (L)
- T only: Words that begin with t but are not nouns and have 5 or more letters
- N only: Nouns that do not begin with t and have 5 or more letters
- L only: Words with fewer than 5 letters that are not nouns and do not begin with t
- T and N only: Words that begin with t and are nouns but have 5 or more letters
- N and L only: Nouns with fewer than 5 letters that do not begin with t
- T and L only: Words that begin with t and have fewer than 5 letters but are not nouns
- T and N and L: Words that begin with t, are nouns, and have fewer than 5 letters
- None: Words that do not fit any of these categories
8. Problem 58: Teachers (T), Swimmers (S), Tall people (L)
- T only: Teachers who are not swimmers or tall
- S only: Swimmers who are not teachers or tall
- L only: Tall people who are not teachers or swimmers
- T and S only: Teachers who swim but are not tall
- S and L only: Swimmers who are tall but not teachers
- T and L only: Teachers who are tall but do not swim
- T and S and L: Teachers who swim and are tall
- None: People who are not teachers, swimmers, or tall
Final answer: Each problem's regions are described as above, identifying members or stating no members if logically empty.