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Considering each choice separately, having values for
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05 Aug 2017, 02:02

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#GREpracticequestion which of the following variables or pairs of variables would be sufficient to determine the measure of.jpg [ 20.64 KiB | Viewed 6426 times ]

Considering each choice separately, having values for which of the following variables or pairs of variables would be sufficient to determine the measure of angle a? It is given that lines m and n are parallel lines.

Indicate all such values.

❑ b

❑ c

❑ d

❑ b and c

❑ c and e

❑ b and f

❑ c and f

_________________

Re: Considering each choice separately, having values for
[#permalink]
24 Sep 2017, 07:13

1

Let's analyze the answers one by one:

a) b°: b alone is not enough to compute a unless we know c

b) c°: same reason as above, we need b too

c) d°: d is enough because lines m and n are parallel and thus d is equal to the supplementary angle of a so that a can be found as 180-d°

d) b° and c°: as we anticipate above, b and c together are enough to compute a since a is supplementary to the third angle of the triangle with b and c that can be found as 180°-b°-c°

e) c° and e°: they are enough too because e is supplementary to b so it is as we have b and c so as above they are enough

f) b° and f°: thanks to parallelism, f is supplementary to angle c so we are still in the b and c case so that they are enough to compute a

g) c° and f°: they are not enough since f is not of help in computing b.

To sum up the answers are C,D,E,F

a) b°: b alone is not enough to compute a unless we know c

b) c°: same reason as above, we need b too

c) d°: d is enough because lines m and n are parallel and thus d is equal to the supplementary angle of a so that a can be found as 180-d°

d) b° and c°: as we anticipate above, b and c together are enough to compute a since a is supplementary to the third angle of the triangle with b and c that can be found as 180°-b°-c°

e) c° and e°: they are enough too because e is supplementary to b so it is as we have b and c so as above they are enough

f) b° and f°: thanks to parallelism, f is supplementary to angle c so we are still in the b and c case so that they are enough to compute a

g) c° and f°: they are not enough since f is not of help in computing b.

To sum up the answers are C,D,E,F

Re: Considering each choice separately, having values for
[#permalink]
06 Nov 2019, 12:22

How is it that we are supposed to determine these two lines (m and n) are parallel?

Re: Considering each choice separately, having values for
[#permalink]
07 Nov 2019, 13:38

Expert Reply

But it does not matter. Whatsoever.

You have to determine the value of a, whatever it is. 0.1 or one million.

If you can calculate it then the answer is yes , therefore, it is correct. Otherwise, do not.

You do not need to know if they are parallel or not.

Regards

_________________

You have to determine the value of a, whatever it is. 0.1 or one million.

If you can calculate it then the answer is yes , therefore, it is correct. Otherwise, do not.

You do not need to know if they are parallel or not.

Regards

_________________

Re: Considering each choice separately, having values for
[#permalink]
21 Nov 2019, 21:44

1

Jbm8509 wrote:

How is it that we are supposed to determine these two lines (m and n) are parallel?

It is given that they are parallel.

Re: Considering each choice separately, having values for
[#permalink]
23 Nov 2019, 16:03

3152gs wrote:

Jbm8509 wrote:

How is it that we are supposed to determine these two lines (m and n) are parallel?

It is given that they are parallel.

Without the information that line m and n are parallel, only answer D is correct.

Re: Considering each choice separately, having values for
[#permalink]
23 Nov 2019, 16:05

1

mouda wrote:

3152gs wrote:

Jbm8509 wrote:

How is it that we are supposed to determine these two lines (m and n) are parallel?

It is given that they are parallel.

Without the information that line m and n are parallel, only answer D is correct.

If that info was not given then, only answer D and E are correct

Re: Considering each choice separately, having values for
[#permalink]
09 Apr 2023, 08:49

I'm always afraid of these questions. Every option has to be calculated correctly. A small mistake will cost this question. Prefer to do these questions at last always

Re: Considering each choice separately, having values for
[#permalink]
28 Dec 2023, 10:48

Any way to make the "m and n are parallel" larger? I looked for that statement and still missed it, and it seems I'm not alone.

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Re: Considering each choice separately, having values for
[#permalink]
28 Dec 2023, 19:29

2

emmar: We have added that info as part of the question stem.

Thank you.

_________________

Thank you.

_________________

Ankit

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How to Solve :

Units' Digit of Exponents || Equation of a Line || Co-ordinate Geometry || Remainders || LCM and GCD || Inequalities || Absolute Value || Factors and Multiples || Number and Sum of Factors || Similar Triangles || Exponents || Work Rate || Probability: Coin Toss || Probability: Dice Roll || Prime Numbers || Circles || Equilateral Triangle in a Circle || Arithmetic and Geometric Progression || Divisibility Rules || Statistics || Functions and Custom Characters || Stem & Leaf Plot || Box And Whisker Plot

GRE Club Topic Wise Problems

GRE Quant - 2019 Ed

GRE Verbal - 2019 Ed

The Princeton Review Quantitative Directory

The 5 lb. Book of GRE Practice Problems (2nd Ed.) - QUANT

GRE - PowerPrep® The FREE Practice Tests Explained 2019

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