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When Cortez arrived in Mexico in A.D. 1519, he observed the inhabitant

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When Cortez arrived in Mexico in A.D. 1519, he observed the inhabitant [#permalink]

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New post 28 Jan 2017, 06:15
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Question Stats:

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When Cortez arrived in Mexico in A.D. 1519, he observed the inhabitants playing a ceremonial game with a rubber ball. The pre-Columbian inhabitants of Mexico began to use rubber around A.D. 1000. Thus, we can be sure that the game must have originated sometime between approximately A.D. 1000 and Cortez’ arrival.

The conclusion reached above depends on which one of the following assumptions?

(A) The pre-Columbian inhabitants of Mexico played games on all ceremonial occasions.
(B) The making of rubber balls was one of the earliest uses of rubber by the inhabitants of Mexico.
(C) The ceremonial game referred to was popular throughout Mexico.
(D) The game had been played since its inception with a rubber ball.
(E) The dating of the first use of rubber in Mexico was due to Cortez

Source: LSAT
[Reveal] Spoiler: OA

Last edited by broall on 22 Sep 2017, 06:57, edited 3 times in total.
Reformatted question

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Re: When Cortez arrived in Mexico in A.D. 1519, he observed the inhabitant [#permalink]

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New post 28 Jan 2017, 07:16
Conclusion:

Thus,we can be sure that the game must have originated sometime between approximately A.D. 1000 and
A.D 1519.

game happens when ceremony happens.
this is possible that first they discovered game and then aopted it for ceremony.

(A) The pre-Columbian inhabitants of Mexico played games on all ceremonial occasions. - talking about games not rubber ball game.
(B) The making of rubber balls was one of the earliest uses of rubber by the inhabitants of Mexico. -
(C) The ceremonial game referred to was popular throughout Mexico. - but still it is not right assumption.
(D) The game had been played since its inception with a rubber ball.
(E) The dating of the first use of rubber in Mexico was due to Cortez - this is not even possible.

confused b/w B and D.

lets use negetion test. if negeted B, anything happens to conclusion i guess not.
if negeted D conclusion does not hold true.

bingo! D
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Re: When Cortez arrived in Mexico in A.D. 1519, he observed the inhabitant [#permalink]

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New post 28 Jan 2017, 09:10
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nahid007 wrote:
When Cortez arrived in Mexico in A.D. 1519, he
observed the inhabitants playing a ceremonial game
with a rubber ball. The pre-Columbian inhabitants of
Mexico began to use rubber around A.D. 1000. Thus,
we can be sure that the game must have originated
sometime between approximately A.D. 1000 and
Cortez’ arrival.
The conclusion reached above depends on which one
of the following assumptions?
(A) The pre-Columbian inhabitants of Mexico
played games on all ceremonial occasions.
(B) The making of rubber balls was one of the
earliest uses of rubber by the inhabitants of
Mexico.
(C) The ceremonial game referred to was popular
throughout Mexico.
(D) The game had been played since its inception
with a rubber ball.
(E) The dating of the first use of rubber in Mexico
was due to Cortez


Pre thinking :No other material is used to play the game..only rubber
D is the only answer justify that.

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Re: When Cortez arrived in Mexico in A.D. 1519, he observed the inhabitant [#permalink]

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New post 12 Dec 2017, 22:23
nahid007 wrote:
When Cortez arrived in Mexico in A.D. 1519, he observed the inhabitants playing a ceremonial game with a rubber ball. The pre-Columbian inhabitants of Mexico began to use rubber around A.D. 1000. Thus, we can be sure that the game must have originated sometime between approximately A.D. 1000 and Cortez’ arrival.

The conclusion reached above depends on which one of the following assumptions?

(A) The pre-Columbian inhabitants of Mexico played games on all ceremonial occasions.
(B) The making of rubber balls was one of the earliest uses of rubber by the inhabitants of Mexico.
(C) The ceremonial game referred to was popular throughout Mexico.
(D) The game had been played since its inception with a rubber ball.
(E) The dating of the first use of rubber in Mexico was due to Cortez

Source: LSAT


The first premise is important because it introduces the 1519 part of the conclusion and it also tells us why we're focused on rubber in connection with the game.

Necessary assumptions can seem out of scope at first. (D) is a classic case of this. Why does it matter whether rubber was the original substance for ball construction?

The argument is dating the invention of the game based on when rubber was invented (or first used). Synthetic materials in modern basketballs were probably invented in the last decade. When was basketball invented? What if the Mexicans played with the heads of their enemies for thousands of years and then switched to rubber when they discovered it in the year 1000 because it bounced better? So the only way this argument can work is if the game was played from the beginning with rubber. (D) removes this "heads of enemies" possibility.

(A) is actually out of scope. We care about when it was invented not why/when it was played.

(B) The conclusion is that the game was invented some time between 1000 and 1519. If it was the very last thing the Mexicans did before Cortez arrived (I'm applying the negation test here), the argument still works. This isn't necessary for the argument.

(C) is also out of scope. We don't care where in Mexico it was popular. We only care when it was invented.

(E) is inviting us to question the premise that rubber was first used in 1000 A.D. (E) tells us that Cortez was the one who determined when the Mexicans started using rubber. For the purposes of the LSAT, Daffy Duck could have been the archeologist who determined when the Mexicans invented rubber. If we're given that as a premise, we can take it to the bank. Remember, we are addressing the gap between the premise and the conclusion---not questioning the premise or the conclusion themselves.
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Re: When Cortez arrived in Mexico in A.D. 1519, he observed the inhabitant [#permalink]

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New post 21 Dec 2017, 23:06
Try to negate D :

The game had NOT been played since its inception with a rubber ball
or maybe
The game had been played BEFORE its inception with a rubber ball.

This argument fails to correlate rubber and game invention.

Wdyt?
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Re: When Cortez arrived in Mexico in A.D. 1519, he observed the inhabitant   [#permalink] 21 Dec 2017, 23:06
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When Cortez arrived in Mexico in A.D. 1519, he observed the inhabitant

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