7. Let B symbolize the statement \"All birds are beautiful.\" Then B must symbol

Question

7. Let B symbolize the statement "All birds are beautiful." Then B must symbolize all of the following, except: a. Some bird is not beautiful b. No birds are beautiful c. It is not the case that all birds are beautiful d. It is false that all birds are beautiful Answer 8. "If you can't use a computer, you won't get a job. I can use a computer very well, so I'm going to get a good job!" What is the best symbolic representation of this argument? a. p => q, ~p, .:-q b. p v-q, p,q d.-pq, pq Answer 9. "If dogs can fly, then the Eart h is a sponge." Is this statement true? Why or why not? a. This is a contingent statement, since it may be either true or false b. This is false, but we must check the world to discover this. c. This is false, as neither the consequent nor the antecedent s true d. This is a true statement because it is in the form of a material conditional and has a false antecedent. Answer: 10. Let B mean "the bread rises" and Y abbreviate "the yeast is good." The compound statement B => Y correctly represents any of the following propositions, except a. That the yeast is good is a necessary condition for the bread to rise b. That the yeast is good is a sufficient condition for the bread to rise c. The bread rises only if the yeast is good. d. If the bread rises, the yeast is good. Answer:

Explanation / Answer

7. Answer : B.

~B symbolises All birds are not beautiful. This statement agrees to all other statemetns except b which says that No birds are beautiful. So answer is B

8. Answer : A

Assume that p represent "I cant use the computer" and q represent "you wont get a job"

Then P=> q and ~p :: ~q tells I can use the computer hence i can get good job. Hence answer is A

9. Answer C.

Since both statements are false, answer is C

10. Answer B.

All the statements agree to B=>Y except Yeast is a sufficient condition for bread to rise. Because yeast is good cannot be a sufficient condition for bread to rise, because so many other factors also contribute to bread rise like temperature, time etc

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