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Re: By devising an instrument made from a rod, wire, and lead balls, and [#permalink]
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NakulDiwakar10 wrote:
MartyTargetTestPrep AndrewN GMATNinja I get it why E) is the correct answer. But in option e) we can see that 'able in' is used. 'Able to' is the correct idiom right??

Hello, NakulDiwakar10. I think you are looking too closely at the two words in isolation. The idiom is correct as presented, only the timestamp has been placed in the middle:

was able in 1797–1798 to arrive

Perhaps the phrasing makes more sense now. Thank you for thinking to ask, and good luck with your studies.

- Andrew
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Re: By devising an instrument made from a rod, wire, and lead balls, and [#permalink]
MartyTargetTestPrep wrote:
Skywalker18 wrote:
1. I understand that the meaning of C is different from that of E in that option C fails to convey the relation.( By devising .. and employing )
Usage of AND conveys independent actions
Is the usage of two 'AND' in option C correct? (AND bolded below)
Henry Cavendish devised an instrument made from a rod, wire, and lead balls, and employed uncommonly precise measurements, and in 1797–1798 was able

The use of two "and"s is not really incorrect and could be taken as a way for the author to indicate that the first two events occurred close to each other in time and the third followed later. In this case, the use of two "and"s doesn't result in a sentence that clearly expresses the point to be made. All the same, that move could be used effectively in some contexts.

Quote:
2. We can also eliminate option A based on pronoun issue?
him can't refer to possessive Henry Cavendish’s

Here's the relevant portion of choice (A).

    in 1797–1798 Henry Cavendish’s apparatus enabled him

In the past, in GMAT Sentence Correction, a subject pronoun may have been considered lacking an antecedent if the only possible referent were the possessive form of a noun. However, more recent questions seem to indicate that the convention has been changed, as the correct answers to these questions have contained subject pronouns that seem to refer to referents derived from possessive forms of nouns.

So, under what seems to be the current convention, there is no pronoun issue in choice (A).



Hi MartyTargetTestPrep , Skywalker18

I request your help in below OG question.
1. As Marty mentioned ''subject pronouns that seem to refer to referents derived from possessive forms of nouns'' are acceptable in GMAT SC. That way, can Henry Canvendish be the subject for both devising and employing in both option A and B? I understand,we have a better option E here in terms of meaning and clarity, but i just wanted to make sure the correct understanding. Marty also made it clear that ''him'' can correctly refer to ''HK''

2. Is the use of ''In 1797–1798'' incorrect?

Ques: By devising an instrument made from a rod, wire, and lead balls, and employing uncommonly precise measurements, in 1797–1798 Henry Cavendish’s apparatus enabled him to arrive at an astonishingly accurate figure for the weight of the earth.

Opt.A) By devising an instrument made from a rod, wire, and lead balls, and employing uncommonly precise measurements, in 1797–1798 Henry Cavendish’s apparatus enabled him
Opt.B) In 1797–1798, by devising an instrument made from a rod, wire, and lead balls, and employing uncommonly precise measurements, Henry Cavendish’s apparatus enabled him
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Re: By devising an instrument made from a rod, wire, and lead balls, and [#permalink]
in option E, the Phrase "was able in " sounds weired
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Re: By devising an instrument made from a rod, wire, and lead balls, and [#permalink]
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