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If the product of the integers a, b, c and d is 546 and if 1

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If the product of the integers a, b, c and d is 546 and if 1 [#permalink] New post 20 Mar 2013, 12:55
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

85% (01:48) correct 15% (01:09) wrong based on 61 sessions
If the product of the integers a, b, c and d is 546 and if 1 < a < b < c < d, what is the value of b+c?

A. 273
B. 185
C. 21
D. 10
E. 4

[Reveal] Spoiler:
"If the product of the integers a, b, c and d is 546 and if 1 < a < b < c < d, what is the value of b+c?"

Factors of 546:

546 | 2
273 | 3
91 | 13
7 | 7
1 | 1

If 1 < a < b < c < d, the only possible way is:

d=13
c=7
b=3
a=2

Therefore: b+c = 3 + 7 = 10

Answer D
[Reveal] Spoiler: OA

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Last edited by Bunuel on 21 Mar 2013, 03:46, edited 1 time in total.
Edited the question and the tags.
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Re: If the product of the integers a, b, c and d is 546 and if 1 [#permalink] New post 21 Mar 2013, 03:48
Expert's post
johnwesley wrote:
If the product of the integers a, b, c and d is 546 and if 1 < a < b < c < d, what is the value of b+c?

A. 273
B. 185
C. 21
D. 10
E. 4

[Reveal] Spoiler:
"If the product of the integers a, b, c and d is 546 and if 1 < a < b < c < d, what is the value of b+c?"

Factors of 546:

546 | 2
273 | 3
91 | 13
7 | 7
1 | 1

If 1 < a < b < c < d, the only possible way is:

d=13
c=7
b=3
a=2

Therefore: b+c = 3 + 7 = 10

Answer D


Make prime factorization of 546: 546=2*3*7*13.

Now, since given that 1 < a < b < c < d, then a=2, b=3, c=7 and d=13 --> b+c=3+7=10.

Answer: D.
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1 KUDOS received
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Re: If the product of the integers a, b, c and d is 546 and if 1 [#permalink] New post 21 Mar 2013, 08:14
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Alright, so we know that the product of a,b,c and d is 546 and 1<a<b<c<d so the first thing we need to do is to break down 546 into a product of prime factors :

546 divided by 2 yields 273
273 divided by 3 yields 91
91 divided by 7 yields 13

Which means that 546 = 2*3*7*13.

So if we consider a = 2, b = 3, c = 7 and d = 13 (in respect to the second condition : 1<a<b<c<d), we have : b+c = 3 + 7 = 10 which is answer choice D.

Hope that helped :-D
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Re: If the product of the integers a, b, c and d is 546 and if 1 [#permalink] New post 21 Mar 2013, 08:25
Bunuel wrote:
johnwesley wrote:
If the product of the integers a, b, c and d is 546 and if 1 < a < b < c < d, what is the value of b+c?

A. 273
B. 185
C. 21
D. 10
E. 4

[Reveal] Spoiler:
"If the product of the integers a, b, c and d is 546 and if 1 < a < b < c < d, what is the value of b+c?"

Factors of 546:

546 | 2
273 | 3
91 | 13
7 | 7
1 | 1

If 1 < a < b < c < d, the only possible way is:

d=13
c=7
b=3
a=2

Therefore: b+c = 3 + 7 = 10

Answer D


Make prime factorization of 546: 546=2*3*7*13.

Now, since given that 1 < a < b < c < d, then a=2, b=3, c=7 and d=13 --> b+c=3+7=10.


Answer: D.



Answer is D

Hi Brunel - Can we actually expect such easy questions to come in GMAT? Just trying to make sure i dont get too excited by solving these quicker!
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Kudos [?]: 26220 [0], given: 2707

Re: If the product of the integers a, b, c and d is 546 and if 1 [#permalink] New post 21 Mar 2013, 08:39
Expert's post
surya167 wrote:
Bunuel wrote:
johnwesley wrote:
If the product of the integers a, b, c and d is 546 and if 1 < a < b < c < d, what is the value of b+c?

A. 273
B. 185
C. 21
D. 10
E. 4

[Reveal] Spoiler:
"If the product of the integers a, b, c and d is 546 and if 1 < a < b < c < d, what is the value of b+c?"

Factors of 546:

546 | 2
273 | 3
91 | 13
7 | 7
1 | 1

If 1 < a < b < c < d, the only possible way is:

d=13
c=7
b=3
a=2

Therefore: b+c = 3 + 7 = 10

Answer D


Make prime factorization of 546: 546=2*3*7*13.

Now, since given that 1 < a < b < c < d, then a=2, b=3, c=7 and d=13 --> b+c=3+7=10.


Answer: D.



Answer is D

Hi Brunel - Can we actually expect such easy questions to come in GMAT? Just trying to make sure i dont get too excited by solving these quicker!


Yes, this is GMAT like question (~600 level).
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

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Re: If the product of the integers a, b, c and d is 546 and if 1   [#permalink] 21 Mar 2013, 08:39
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