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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
If [z] denotes the greatest integer less than or equal to z and [z] =
[#permalink]
30 Apr 2022, 11:35
30 Apr 2022, 11:35
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Question Stats:
33% (00:45) correct
66% (01:17) wrong based on 6 sessions
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If [z] denotes the greatest integer less than or equal to z and [z] = -1 which of the following statements must be true?
A. z = -1
B. -2 ≤ z < -1
C. -2 < z ≤ -1
D. -1 ≤ z < 0
E. -1 < z ≤ 0
A. z = -1
B. -2 ≤ z < -1
C. -2 < z ≤ -1
D. -1 ≤ z < 0
E. -1 < z ≤ 0
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: If [z] denotes the greatest integer less than or equal to z and [z] =
[#permalink]
30 Apr 2022, 13:10
30 Apr 2022, 13:10
2
GeminiHeat wrote:
If [z] denotes the greatest integer less than or equal to z and [z] = -1 which of the following statements must be true?
A. z = -1
B. -2 ≤ z < -1
C. -2 < z ≤ -1
D. -1 ≤ z < 0
E. -1 < z ≤ 0
A. z = -1
B. -2 ≤ z < -1
C. -2 < z ≤ -1
D. -1 ≤ z < 0
E. -1 < z ≤ 0
Let's make sure we understand what this [] symbol means.
Here are a few examples:
[3.1] = 3
[5.8] = 5
[0.7] = 0
[-0.9] = -1
[-4.6] = -5
So, if [z] = -1, then -1 ≤ z < 0
Answer: D
Cheers,
Brent
gmatclubot
Re: If [z] denotes the greatest integer less than or equal to z and [z] = [#permalink]
30 Apr 2022, 13:10
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