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13 Apr 2020, 07:03
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Difficulty:
35%
(medium)
Question Stats:
69% (01:37) correct
31%
(01:39)
wrong
based on 730
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Essayist: Every contract negotiator has been lied to by someone or other, and whoever lies to anyone is practicing deception. But, of course, anyone who has been lied to has also lied to someone or other.
If the essayist’s statements are true, which one of the following must also be true?
(A) Every contract negotiator has practiced deception.
(B) Not everyone who practices deception is lying to someone.
(C) Not everyone who lies to someone is practicing deception.
(D) Whoever lies to a contract negotiator has been lied to by a contract negotiator.
(E) Whoever lies to anyone is lied to by someone.
If the essayist’s statements are true, which one of the following must also be true?
(A) Every contract negotiator has practiced deception.
(B) Not everyone who practices deception is lying to someone.
(C) Not everyone who lies to someone is practicing deception.
(D) Whoever lies to a contract negotiator has been lied to by a contract negotiator.
(E) Whoever lies to anyone is lied to by someone.
15 Apr 2020, 06:04
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Bunuel
This is a question which can be done even with Venn diagram testing Set and sub-set concept. Or we can also use IF -THEN concept.
There are 3 sets..
Set A- Those who have been lied to....Mr D is a part of it.
Set B - Practicing deception
Set C - Those who have lied to someone...
Every contract negotiator(D) has been
lied to by someone or other(A), and whoever lies to anyone(C) is practicing deception.(B).........If C, then B
But, of course, anyone who has been lied to (A) has also lied to someone or other. (C).........If A, then C
Or we can say A>>> C>>>B
Let us see the choices...
(A) Every contract negotiator has practiced deception.
We know D is part of A, so he is also C. And we know C is also B.
So, D is B, that is Every contract negotiator(D) has practiced deception(B)...TRUE
(B) Not everyone who practices deception(B) is lying to someone(C).
We can say that C>>>B, but we cannot say If B then C or All B not equal to C..It may be that B and C are overlapping sets.
(C) Not everyone who lies to someone(C) is practicing deception(B).
This is clearly not true. We know that - If C, then B.
(D) Whoever lies to a contract negotiator has been lied to by a contract negotiator.
D is not a part of both A and B. Out of context
(E) Whoever lies to anyone(C) is lied to by someone(A).
Very likely to be picked up as the answer.
But If A, then C does not mean If C, then A.
We can just say that If NOT C, then NOT A.
A.
zs2
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15 Apr 2020, 08:12
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Essayist: Every contract negotiator has been lied to by someone or other, and whoever lies to anyone is practicing deception. But, of course, anyone who has been lied to has also lied to someone or other.
If the essayist’s statements are true, which one of the following must also be true?
(A) Every contract negotiator has practiced deception.
Question stem says that every Contract negotiator has lied to someone, Anyone who lies has practiced deception, Thus we can conclude that Every contact negotiator has practiced deception. Else argument will fall apart. Hence must be true . Correct A
(B) Not everyone who practices deception is lying to someone.- Cant say there can be other means also to practice deception
(C) Not everyone who lies to someone is practicing deception.- this is opposite to what is given
(D) Whoever lies to a contract negotiator has been lied to by a contract negotiator. - we cant be sure about it
(E) Whoever lies to anyone is lied to by someone. - already given in statement. We are asked which is ALSO MUST BE TRUE ....
If the essayist’s statements are true, which one of the following must also be true?
(A) Every contract negotiator has practiced deception.
Question stem says that every Contract negotiator has lied to someone, Anyone who lies has practiced deception, Thus we can conclude that Every contact negotiator has practiced deception. Else argument will fall apart. Hence must be true . Correct A
(B) Not everyone who practices deception is lying to someone.- Cant say there can be other means also to practice deception
(C) Not everyone who lies to someone is practicing deception.- this is opposite to what is given
(D) Whoever lies to a contract negotiator has been lied to by a contract negotiator. - we cant be sure about it
(E) Whoever lies to anyone is lied to by someone. - already given in statement. We are asked which is ALSO MUST BE TRUE ....
