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.
E is the sum of the first 40 positive even integers. K is the sum o
[#permalink]
03 Aug 2021, 06:26
03 Aug 2021, 06:26
1
Expert Reply
2
Bookmarks
00:00
Question Stats:
48% (01:12) correct
51% (01:34) wrong based on 29 sessions
Hide Show timer Statistics
E is the sum of the first 40 positive even integers. K is the sum of the first 40 positive odd integers.
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.
Quantity A |
Quantity B |
E-K |
40 |
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.
Re: E is the sum of the first 40 positive even integers. K is the sum o
[#permalink]
03 Aug 2021, 07:04
03 Aug 2021, 07:04
1
Ans C
E = sum of even 40 numbers = 40*41
K = sum of odd 40 odd no. = 40 * 40
E - k = 40
E = sum of even 40 numbers = 40*41
K = sum of odd 40 odd no. = 40 * 40
E - k = 40
Retired Moderator
Joined: 16 Apr 2020
Status:Founder & Quant Trainer
Affiliations: Prepster Education
Posts: 1546
Given Kudos: 172
Location: India
WE:Education (Education)
E is the sum of the first 40 positive even integers. K is the sum o
[#permalink]
03 Aug 2021, 07:13
03 Aug 2021, 07:13
1
Carcass wrote:
E is the sum of the first 40 positive even integers. K is the sum of the first 40 positive odd integers.
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.
Quantity A |
Quantity B |
E-K |
40 |
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.
Remember:
1. Average of \(n\) consecutive even numbers is \((n + 1)\)
2. Average of \(n\) consecutive odd numbers is \(n\)
Sum = (Average)(number of terms)
E = \((40 + 1)40 = (41)40\)
K = \((40)40\)
Col. A: \(40(41 - 40) = 40\)
Col. B: \(40\)
Hence, option C
