Invalid logical question

[ComBin]

Binary package hint: gbrainy

This question is incorrect (see the attached picture).

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gbrainy 1.65-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-25.44-generic 2.6.35.10
Uname: Linux 2.6.35-25-generic i686
Architecture: i386
Date: Fri May 20 18:43:31 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 LANG=ru_RU.utf8
 LC_MESSAGES=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: gbrainy
UpgradeStatus: Upgraded to natty on 2011-04-29 (21 days ago)

[Jordi Mas (jmas-softcatala)]

Hello,

What you please elaborate what the error is and what is in your opinion the right answer?

Thanks,

Jordi,

[ComBin (combin)]

Right answer is: "y < q" or "r < q".
Answer B is incorrect becouse: "... if P is bigger than S then condition X > Y is true" but if P smaller than S condition X > Y still true. Example "P < X > Y < S" can be represented as "10 < 20 > 5 < 20". "10 < 20 (P < S)" and condition "P < X > Y < S" is true.

[Jordi Mas (jmas-softcatala)]

Thanks for the explanation.

I confirm the bug.

After fixing this, I will look like:

If p < x < q and r < y < s. Which of the following options makes x > y true? [option_answers]</_question>

a) y < q (correct)

b) p < r

c) p > r

d) q = s

Rationale: If the variable y is smaller than q then the condition x > y is always true

Let me know if it looks OK to you.

Thanks,

Jordi,

[ComBin (combin)]

It look correct.
Only in my opinion better to use the answer "r <q", since it is less obvious and therefore more interesting.

[Jordi Mas (jmas-softcatala)]

Make sense, I introduced this change.

There is another similar puzzle that says:

If p < x < q and r < y < s. Which of the following options makes x < y true?

a) s > p (correct)

b) p < r

c) p > r

d) q = s

If the variable s is bigger than p then the condition x < y is always true.</_rationale>

Do you see any problem on it?

Thanks a lot,

Jordi,

[ComBin (combin)]

No, it right.

[Jordi Mas (jmas-softcatala)]

This has been fixed in HEAD. Thanks a lot. Jordi,