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If [x] is the greatest integer less than or equal to x, what

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by swerve » Wed May 30, 2018 9:37 am
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If [x] is the greatest integer less than or equal to x, what is the value of [-1.6]+[3.4]+[2.7]?

A. 3
B. 4
C. 5
D. 6
E. 7

The OA is A.

I tried to solve this PS question as follows,

[-1.6] = -2
[3.4] = 3
[2.7] = 3

So, the expression is --> -2 + 3 + 3 = 4.

Where my mistake is? I don't understand it. Please, can anyone help? Thanks!
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by Brent@GMATPrepNow » Wed May 30, 2018 10:03 am
swerve wrote:If [x] is the greatest integer less than or equal to x, what is the value of [-1.6]+[3.4]+[2.7]?

A. 3
B. 4
C. 5
D. 6
E. 7

The OA is A.

I tried to solve this PS question as follows,

[-1.6] = -2
[3.4] = 3
[2.7] = 3

So, the expression is --> -2 + 3 + 3 = 4.

Where my mistake is? I don't understand it. Please, can anyone help? Thanks!
[2.7] = 2, not 3

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
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by Scott@TargetTestPrep » Tue May 07, 2019 5:34 pm
swerve wrote:If [x] is the greatest integer less than or equal to x, what is the value of [-1.6]+[3.4]+[2.7]?

A. 3
B. 4
C. 5
D. 6
E. 7
[-1.6]+[3.4]+[2.7] = -2 + 3 + 2 = 3

Answer: A

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