Page 249 - MATHEMATICS COURSE FOR SECONDARY SCHOOLS BOOK 2

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U
N 17 T
39
p: All students are intelligent q: Aristotle is not a student. c: Aristotle is not intelligent.
p: No human is perfect
q: Super girl is not human. c: Super girl is perfect.
p: All books are paper.
q: All paper are white.
c: All books are not white.
p: All trees are green. q: Avocado is green. c: Avocado is a tree.
p: Yohan is a Jamaican.
q: All Jamaican are sprinters. c: Yohan is a sprinter.
p: All cars are vehicles.
q: No horse carts are vehicles. c: No horse cart is a car.
For questions 18 to 27, use set theory to prove whether the last statement in each of the syllogism is valid, invalid or inconclusive.
18 p: All men are mental q: Achilles is a man
c: Achilles is mental.
19 p: All dogs have hair. q: Some dogs are pets.
c: Some pets have hair.
20 p: All desks are wood. q: No wood is metal
c: No desk is mental.
21 p: All fruits are juicy. q: Mango is a fruit.
c: No mango is juicy.
C 10
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In a survey at a school the Venn diagram above was obtained.
N = { students who need National Geographic} C = {students who need Caribbean Times}
And T = {students who need Tobago Magazine}
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