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.
80 is divisible by 2^x.
[#permalink]
25 Aug 2018, 14:59
25 Aug 2018, 14:59
Expert Reply
2
Bookmarks
00:00
Question Stats:
69% (00:28) correct
30% (00:22) wrong based on 88 sessions
Hide Show timer Statistics
80 is divisible by \(2^x\).
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 |
x |
3 |
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.
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: 80 is divisible by 2^x.
[#permalink]
12 Nov 2018, 08:47
12 Nov 2018, 08:47
sandy wrote:
80 is divisible by \(2^x\).
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 |
x |
3 |
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.
Let's test some values....
Case #1
If 80 is divisible by 2^x, then it COULD be the case that x = 3, since 2^3 = 8, and 80 is divisible by 8
So, we get:
QUANTITY A: 3
QUANTITY B: 3
In this case, the quantities are EQUAL
Case #2
If 80 is divisible by 2^x, then it COULD be the case that x = 2, since 2^2 = 4, and 80 is divisible by 4
So, we get:
QUANTITY A: 2
QUANTITY B: 3
In this case, Quantity B IS GREATER
Answer: D
Cheers,
Brent
Manager
Joined: 07 Aug 2016
Posts: 59
Given Kudos: 0
GRE 1: Q166 V156
Re: 80 is divisible by 2^x.
[#permalink]
19 Nov 2018, 16:40
19 Nov 2018, 16:40
1
x could be 0,1,2, or 3
If x = 0 the. 2^0 = 1
80/1 = 80
0 < 3
However, if x = 3 then 2^3 = 8
80/8 is divisible.
Yet 3 = 3 so getting two different answers means we get answer choice D
If x = 0 the. 2^0 = 1
80/1 = 80
0 < 3
However, if x = 3 then 2^3 = 8
80/8 is divisible.
Yet 3 = 3 so getting two different answers means we get answer choice D
