ANSWERS A-5 11. U 25 Floods 34 27 30 78 31 37 88 Mold Sinkholes a) 67 b) 237 c) 37 d) 25 13. In a Venn diagram, regions II, IV, and V contain a total of 37 cars driven by women. This total is greater than the 35 cars driven by the women, as given in the exercise. 15. U Wheat Corn 90 Oats 125 110 35 15 10 90 25 a) 410 b) 35 c) 90 d) 50 17. a) 10 b) 10 c) 6 SECTION 2.6, PAGE 90 1. Infinite 3. n n 5, 6, 7, 8, 9, , 4, 6, 7, 8, 9, 10, , 5, { } { } … + … ↓ ↓ ↓ ↓ ↓ ↓ … + … 5. n n 6, 8, 10, 12, 14, , 2 4, 8, 10, 12, 14, 16, , 2 6, { } { } … + … ↓ ↓ ↓ ↓ ↓ ↓ … + … 7. n n 5, 7, 9, 11, 13, , 2 3, 7, 9, 11, 13, 15, , 2 5, { } { } … + … ↓ ↓ ↓ ↓ ↓ ↓ … + … 9. n n 1 2 , 1 4 , 1 6 , 1 8 , 1 10 , , 1 2 , 1 4 , 1 6 , 1 8 , 1 10 , 1 12 , , 1 2 2 , { } { } … … ↓ ↓ ↓ ↓ ↓ ↓ … + … 11. n n 4 11 , 5 11 , 6 11 , 7 11 , 8 11 , , 3 11 , 5 11 , 6 11 , 7 11 , 8 11 , 9 11 , , 4 11 , { } { } … + … ↓ ↓ ↓ ↓ ↓ ↓ … + … 13. n n 1,2,3, 4, 5, , , 3, 6, 9, 12, 15, , 3 , { } { } … … ↓ ↓ ↓ ↓ ↓ ↓ … … 15. n n 1, 2, 3, 4, 5, , , 4, 6, 8, 10, 12, , 2 2, { } { } … … ↓ ↓ ↓ ↓ ↓ ↓ … + … b) Region Set Region Set I A B C D > > > ′ ′ ′ IX A B C D > > > ′ ′ II A B C D > > >′ ′ X A B C D > > > ′ III A B C D > > > ′ ′ ′ XI A B C D > > > ′ ′ IV A B C D > > > ′ ′ XII A B C D > > > ′ V A B C D > > >′ XIII A B C D > > > ′ ′ ′ VI A B C D > > > ′ ′ XIV A B C D > > > ′ ′ VII A B C D > > > ′ XV A B C D > > > ′ ′ ′ VIII A B C D > > > XVI A B C D > > > ′ ′ ′ ′ SECTION 2.5, PAGE 83 1. U 97 80 58 15 Cafeteria Library a) 97 b) 58 c) 15 3. U 12 Finished basement Three-car garage 35 17 13 a) 12 b) 17 c) 64 5. U Instagram 2 Facebook 11 8 22 23 16 14 12 Snapchat a) 11 b) 12 c) 92 d) 31 e) 51 7. U Comedies 20 121 83 21 16 11 40 38 Science fiction Dramas a) 20 b) 121 c) 244 d) 65 e) 290 9. U Hulu 29 128 51 58 27 32 85 40 Max Netflix a) 450 b) 40 c) 85 d) 99 e) 421
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