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13 Apr 2020, 06:16
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Difficulty:
25%
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Question Stats:
72% (01:03) correct
28%
(01:33)
wrong
based on 1081
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Astronaut: Any moon, by definition, orbits some planet in a solar system. So, the moons in solar system S4 all orbit the planet Alpha.
The astronaut’s conclusion follows logically if which one of the following is assumed?
(A) There is only one moon in S4.
(B) Every moon in S4 orbits the same planet.
(C) Alpha is the only planet in S4.
(D) Every planet in S4 is orbited by more than one moon.
(E) There is at least one moon that orbits Alpha.
The astronaut’s conclusion follows logically if which one of the following is assumed?
(A) There is only one moon in S4.
(B) Every moon in S4 orbits the same planet.
(C) Alpha is the only planet in S4.
(D) Every planet in S4 is orbited by more than one moon.
(E) There is at least one moon that orbits Alpha.
16 Apr 2020, 15:10
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Astronaut: Any moon, by definition, orbits some planet in a solar system. So, the moons in solar system S4 all orbit the planet Alpha.
The astronaut’s conclusion follows logically if which one of the following is assumed?
(A) There is only one moon in S4. Incorrect If there is only one moon and many planets, the moon can orbit any other planet.
(B) Every moon in S4 orbits the same planet. Incorrect What if there is planet other than Alpha. Moon can orbit that planet
(C) Alpha is the only planet in S4.Correct If there is only one planet and every moon has to orbit some planet, then all moons will orbit around Alpha.
(D) Every planet in S4 is orbited by more than one moon. Incorrect Irrelevant
(E) There is at least one moon that orbits Alpha. Incorrect
The astronaut’s conclusion follows logically if which one of the following is assumed?
(A) There is only one moon in S4. Incorrect If there is only one moon and many planets, the moon can orbit any other planet.
(B) Every moon in S4 orbits the same planet. Incorrect What if there is planet other than Alpha. Moon can orbit that planet
(C) Alpha is the only planet in S4.Correct If there is only one planet and every moon has to orbit some planet, then all moons will orbit around Alpha.
(D) Every planet in S4 is orbited by more than one moon. Incorrect Irrelevant
(E) There is at least one moon that orbits Alpha. Incorrect
General Discussion
20 Apr 2020, 21:57
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Astronaut: Any moon, by definition, orbits some planet in a solar system. So, the moons in solar system S4 all orbit the planet Alpha.
A principle is presented
That principle applies to a specific case
Any moon -> orbit some planet
Moons in S4 -> all orbit Alpha
It seems like there is go GAP here. So this is probably a Defender Assumption question type. Let's defend the conclusion that there is no other alternative scenario that Moons orbit other than planet Alpha.
The astronaut’s conclusion follows logically if which one of the following is assumed?
Only (C) is left. (C) is our correct answer.
A principle is presented
That principle applies to a specific case
Any moon -> orbit some planet
Moons in S4 -> all orbit Alpha
It seems like there is go GAP here. So this is probably a Defender Assumption question type. Let's defend the conclusion that there is no other alternative scenario that Moons orbit other than planet Alpha.
The astronaut’s conclusion follows logically if which one of the following is assumed?
Quote:
Which planet does this moon orbit? Alpha or Beta? (A) is out.
Quote:
This is similar to A. Which planet does every moon orbits? Alpha or Theta? (B) is out.
Quote:
This matches our thought. It eliminates the possibility that moons can orbit any other planet other than Alpha. Hang on to (C).
Quote:
This straight out says that there is more than 1 planets and every planet has 1 moon. So All moons orbit Alpha is not true. (D) is out.
Quote:
How about other moons? (E) is out.
Only (C) is left. (C) is our correct answer.
