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# Because Halleys comet changes orbit slightly during the

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Manager
Joined: 22 Jul 2009
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Location: Manchester UK
Because Halleys comet changes orbit slightly during the [#permalink]

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26 Sep 2009, 11:52
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163. Because Halley’s comet changes orbit slightly during the seventy-six-year interval between passing close to Earth, it may veer onto a collision course with a planet sometime in the distant future.
(A) between passing
(B) of passing
(C) between its passes
(D) of its passes
(E) as it passes

completely lost it please can any 1 explain
Manager
Joined: 08 Nov 2005
Posts: 166
Re: Because Halleys comet changes orbit slightly during the [#permalink]

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26 Sep 2009, 18:39
IMO E.

Dont read the strike part, does it make sense? Only E fits here.
-> Because Halley’s comet changes orbit slightly [strike]during the seventy-six-year interva[/strike]l as it passes close to the earth, it may veer onto a collision course with a planet sometime in the distant future.
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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26 Sep 2009, 18:40
Another reasons, between has to follow by two things
its trying to trick us by giving "interval OF" but its wrong.

Whats OA?
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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26 Sep 2009, 23:22
I was inclined to choose B cuz of "OF", but now say E.
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Manager
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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27 Sep 2009, 10:32
The OA is C
even i cant figure it out
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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27 Sep 2009, 22:36
sagarsabnis wrote:
The OA is C
even i cant figure it out

hmm...can anyone explain why C?
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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28 Sep 2009, 07:23
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sagarsabnis wrote:
163. Because Halley’s comet changes orbit slightly during the seventy-six-year interval between passing close to Earth, it may veer onto a collision course with a planet sometime in the distant future.
(A) between passing
(B) of passing
(C) between its passes
(D) of its passes
(E) as it passes

completely lost it please can any 1 explain

C is correct.

The subject of the sentence is "Halley's comet", but the sentence describes the path of the comet. A pronoun is required to refer to "comet's path/pass"
"its" correctly refers to Comet's passes or passing (the comet's action)

The options are narrowed down to C and D. D is better. "between" correctly describes the comet's action between 2 stages.
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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28 Sep 2009, 23:15
I too chose E, can someone explain more why C is good? some explanation is there above but kind of confusing really.
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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29 Sep 2009, 06:08
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manojgmat wrote:
I too chose E, can someone explain more why C is good? some explanation is there above but kind of confusing really.

The subject of the sentence is "comet" ( or call Halley's comet).

Now note that the second part of the sentence is not referring to the comet but to comet's ordit, so a noun/pronoun is required to refer to comet's orbit

Because Halley’s comet changes orbit slightly during the seventy-six-year interval between the comet's orbits close to Earth, it may veer onto a collision course with a planet sometime in the distant future.

There are two nouns in this sentence "comet" and comet's "comet's orbit/passes" and a pronoun "its" is required in the second part of the sentence to refer to "orbit/passes"
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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29 Sep 2009, 07:10
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duttarupam wrote:
Because Halley’s comet changes orbit slightly during the seventy-six-year interval between the comet's orbits close to Earth, it may veer onto a collision course with a planet sometime in the distant future.

Here in subordinate clause, its refer to comet's not comet's orbit's. Comet's orbit doesn't pass in interval close to Earth, but the comet does.

how to define an interval - (interval between two passes of comet close to Earth[*consecutive is implicit]) <== This is what is implied in here by using "between its passes".

Also, 'it' in last clause again refers to Comet not Comet's orbit.
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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11 Apr 2010, 01:26
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OA should be C.

In E, "as it passes" imples that the Comet takes 76 yrs to pass close to Earth. If thats true then people will book trips in advance

So, E is definitly wrong. We are discussing about an interval, which is calculated b/w 2 occurances. So, I think C is correct.
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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11 Apr 2010, 08:57
This is very tricky. I went with B. got caught in the trick.

Thanks for the explanations.
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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25 Sep 2010, 07:43
Very tricky. Don't understand why C is correct?
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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25 Sep 2010, 09:12
wow! at first I went for E
having read explanation above still I can not digest C very well
confusing, isnt it?
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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26 Sep 2010, 13:39
I would also aprreciate some more clarification.
Could anybody elaborate a bit more?
still confused with this one.
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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27 Sep 2010, 02:13
I was going back and forth between C and D. Couldn't figure out if "interval between" was redundant, so I went with D, but I can see it both ways. Is "interval of" unidiomatic?
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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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25 Apr 2012, 02:35
It is not clear why the ans is C. Does Gmat test in this way?
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Because Halley s comet changes orbit slightly during the [#permalink]

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22 Dec 2012, 04:06
Because Halley’s comet changes orbit slightly during the seventy-six-year interval between passing close to Earth, it may veer onto a collision course with a planet sometime in the distant future.
(A) between passing
(B) of passing
(C) between its passes
(D) of its passes
(E) as it passes

Source: Jamboree
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22 Dec 2012, 05:44
Marcab wrote:
Because Halley’s comet changes orbit slightly during the seventy-six-year interval between passing close to Earth, it may veer onto a collision course with a planet sometime in the distant future.
(A) between passing
(B) of passing
(C) between its passes
(D) of its passes
(E) as it passes

Source: Jamboree

the sentence talks about the change in comets orbit leading to a future possible collision.

I earlier thought if the sentence said 'Because Halley’s comet changes orbit slightly as it passes close to earth,it may.............' here as is used to signify the time when the comet changes orbit. But then 'during the 76 yr interval' wouldn't fit in. 76 yr interval in what?

but may be the author is trying to say -- that the comet passes earth after the interval of every 76 years and during this period it changes course slightly , which may cause a collision........
So this seems to make sense. So IMO it is D (though 'of its passes' sounds bad) passes=when the comet passes earth the 2nd time after 76 yrs
Because Halley’s comet changes orbit slightly during the seventy-six-year interval of its passes close to Earth, it may veer onto a collision course with a planet sometime in the distant future.

Editing my post-- just saw the explanation by Stacy Koprince and a little caveat was added 'Please do not study stuff that you find on random web sites without sourcing or attribution as to the author of the material. If something feels weird or not GMAT-like, don't study it. '

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Re: Because Halleys comet changes orbit slightly during the [#permalink]

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01 Apr 2014, 06:44
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Re: Because Halleys comet changes orbit slightly during the   [#permalink] 01 Apr 2014, 06:44

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