A student is taking a standardized test consisting of multiple choice questions for which there are five options for each question. Five points are awarded for each correct answer, but the student loses 2 points for an incorrect answer. Questions left blank neither receive nor lose points. What is the minimum number of options that the student should be able to rule out before making a guess on any particular question?

Question

anonymous · Answer

A

Two
B

None
C

One
D

Three

anonymous · Answer

is it c? :)

anonymous · Answer

I believe so because the student should be able to guess at any time, without ruling out any of the answers.

anonymous · Answer

My bad B, none.

anonymous · Answer

yep, it should be none I think.

anonymous · Answer

because the student should not be able to rule out any number of options before making a guess.

anonymous · Answer

@apoorvk to the rescue lol. Let him verify it.

anonymous · Answer

haha!

apoorvk · Answer

If he is making a 'guess', then 'C'. You don't really need to rule out any option if it's a guess.

However to be sure of an answer, you need to rule out the 4 wrong options (which is not what they are asking here).

anonymous · Answer

The next question is almost exactly the same too :/

A student is taking a standardized test consisting of multiple choice questions for which there are five options for each question. Ten points are awarded for each correct answer, but the student loses 2 points for an incorrect answer. Questions left blank neither receive nor lose points. What is the minimum number of options that the student should be able to rule out before making a guess on any particular question?

anonymous · Answer

yep, so I was right, phew**

apoorvk · Answer

OOP!!

"NONE'' would be *B*

anonymous · Answer

Yes, so B right?

anonymous · Answer

yes B

apoorvk · Answer

Right, I mean that's for the first question.

anonymous · Answer

YEAHH!!!! I did it! haha *does math dance* lol!

apoorvk · Answer

LOoolllLLL :D

anonymous · Answer

what about that second one?

anonymous · Answer

should be none as well? the only difference is that ten points are awarded for a correct answer in that question and yet again no ruling out of any answer is required for guessing.

apoorvk · Answer

Same same.

anonymous · Answer

that's dumb. frikken giving me another 'exact' question. pshh waste of my time lol! JK;) thanks guys!

anonymous · Answer

haha yeh lol, no problem, credits to apoorvk for helping me verify what I thought was wrong.

apoorvk · Answer

No no, credit to you two only :)

anonymous · Answer

nope you verified;D