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# M13-31

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Math Expert
Joined: 02 Sep 2009
Posts: 59674

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16 Sep 2014, 00:50
00:00

Difficulty:

45% (medium)

Question Stats:

58% (01:03) correct 42% (01:09) wrong based on 48 sessions

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If function $$ROUND(x)$$ rounds $$x$$ to the nearest integer while function $$TRUNC(x)$$ truncates $$x$$ to the largest integer less than $$x$$, what is $$ROUND(2.501) - TRUNC(-1.8) - TRUNC(-0.25)$$ ?

A. 2
B. 3
C. 4
D. 5
E. 6

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Math Expert
Joined: 02 Sep 2009
Posts: 59674

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16 Sep 2014, 00:50
1
2
Official Solution:

If function $$ROUND(x)$$ rounds $$x$$ to the nearest integer while function $$TRUNC(x)$$ truncates $$x$$ to the largest integer less than $$x$$, what is $$ROUND(2.501) - TRUNC(-1.8) - TRUNC(-0.25)$$ ?

A. 2
B. 3
C. 4
D. 5
E. 6

$$ROUND(2.501) = 3$$; $$TRUNC(-1.8) = -2$$; $$TRUNC(-0.25) = -1$$.

$$ROUND(2.501) - TRUNC(-1.8) - TRUNC(-0.25) = 3 - (-2) - (-1) = 6$$.

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Joined: 25 Aug 2007
Posts: 43

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10 Aug 2016, 18:18
Largest integer - isn't it -1 in case -1.8 and 0 in case -0.25?
Math Expert
Joined: 02 Sep 2009
Posts: 59674

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11 Aug 2016, 02:07
inter wrote:
Largest integer - isn't it -1 in case -1.8 and 0 in case -0.25?

The largest integer less than x. The largest integer less than -1.8 is -2.
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Joined: 25 Aug 2007
Posts: 43

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11 Aug 2016, 06:11
Sorry, my bad, was tired in the evening.
Intern
Joined: 06 May 2019
Posts: 32
Location: India
Concentration: General Management, Marketing

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28 Nov 2019, 06:10
Bunuel

what is round(2.5)????
Re: M13-31   [#permalink] 28 Nov 2019, 06:10
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# M13-31

Moderators: chetan2u, Bunuel