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# K or N

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K or N [#permalink]  10 Jun 2018, 08:21
Expert's post
00:00

Question Stats:

88% (01:17) correct 11% (01:04) wrong based on 34 sessions
Attachment:

stairs.jpg [ 9.36 KiB | Viewed 822 times ]

 Quantity A Quantity B K N

A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Re: K or N [#permalink]  13 Jun 2018, 21:59
1
KUDOS
we have two equal angles (x), If we extend k and N such that they meet at right angle we have a 90 -45-45 triangle.

In isoscles triangle two sides have equal length. In this case side opposite angle x are equal.

We also know that there are two sides with length 3 and 4
side of length 3 is parallel to n and side of length 4 is parallel to k

Therefore we have K + 4 = n + 3
If we reduce 3 from both sides we get,
k + 1 = n

Therefore since we add something to k to make it equal to n k is smaller than n
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This is my response to the question and may be incorrect. Feel free to rectify any mistakes

Manager
Joined: 29 Nov 2017
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Location: United States
GRE 1: Q142 V146
WE: Information Technology (Computer Software)
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Re: K or N [#permalink]  29 Aug 2018, 03:05
1
KUDOS
amorphous wrote:
we have two equal angles (x), If we extend k and N such that they meet at right angle we have a 90 -45-45 triangle.

In isoscles triangle two sides have equal length. In this case side opposite angle x are equal.

We also know that there are two sides with length 3 and 4
side of length 3 is parallel to n and side of length 4 is parallel to k

Therefore we have K + 4 = n + 3
If we reduce 3 from both sides we get,
k + 1 = n

Therefore since we add something to k to make it equal to n k is smaller than n

My approach was same but it took me 6.53 min to land on the same approach. what should i do to do questions fast?
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Re: K or N [#permalink]  29 Aug 2018, 03:31
Expert's post
I do think the amorphous's approach is the fastest.

Maybe, @sandy could shed light.........

Regards
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Re: K or N [#permalink]  29 Aug 2018, 03:48
2
KUDOS
Expert's post
Unfortunately @amorphous approach is the fastest method I could think of too. To be fair it is usually rare to see things like extending the diagram by construction in the GRE but these questions do exist.

It is quite possible that you saw this type of question for the first time and hence it took you longer to figure out, but I think with a little practice you would get faster.
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Manager
Joined: 29 Nov 2017
Posts: 190
Location: United States
GRE 1: Q142 V146
WE: Information Technology (Computer Software)
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Kudos [?]: 77 [0], given: 99

Re: K or N [#permalink]  30 Aug 2018, 08:30
sandy wrote:
Unfortunately @amorphous approach is the fastest method I could think of too. To be fair it is usually rare to see things like extending the diagram by construction in the GRE but these questions do exist.

It is quite possible that you saw this type of question for the first time and hence it took you longer to figure out, but I think with a little practice you would get faster.

Thanks a lot.
Re: K or N   [#permalink] 30 Aug 2018, 08:30
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