GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
The largest prime factor
[#permalink]
08 Apr 2022, 02:00
08 Apr 2022, 02:00
1
Expert Reply
1
Bookmarks
00:00
Question Stats:
58% (01:13) correct
41% (01:04) wrong based on 12 sessions
Hide Show timer Statistics
Quantity A |
Quantity B |
The largest prime factor of 351 |
The greatest common factor of 42 and 140 |
A. Quantity A is greater
B. Quantity B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Part of the project: GRE Quantitative Reasoning Daily Challenge - (2022) EDITION
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
Re: The largest prime factor
[#permalink]
10 Apr 2022, 08:27
10 Apr 2022, 08:27
3
351 is div by 3 deduce from divisibility rule..use calculator...you find 13 as the highest prime factor
42 and 140 div by 7 and then 2 no more common so HCF = 14
B is greater
42 and 140 div by 7 and then 2 no more common so HCF = 14
B is greater
Retired Moderator
Joined: 16 Apr 2020
Status:Founder & Quant Trainer
Affiliations: Prepster Education
Posts: 1546
Given Kudos: 172
Location: India
WE:Education (Education)
Re: The largest prime factor
[#permalink]
06 May 2022, 00:52
06 May 2022, 00:52
1
Carcass wrote:
Quantity A |
Quantity B |
The largest prime factor of 351 |
The greatest common factor of 42 and 140 |
A. Quantity A is greater
B. Quantity B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Part of the project: GRE Quantitative Reasoning Daily Challenge - (2022) EDITION
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
351 = (3)(117) = (3)(3)(39) = (3)(3)(3)(13)
So, the Largest prime factor is 13
42 = (2)(21) = (2)(3)(7)
140 = (2)(70) = (2)(2)(35) = (2)(2)(5)(7)
So, the GCF is (2)(7) = 14
Col. A: 13
Col. B: 14
Col. A < Col. B
Hence, option B
