probability

[anik1989]

A man speaks truth 3 out of 4 times. He throws a die and reports it to be a 6.
What is the probability of it being a 6?

[tuanpho]

If it is a fair die, it is (1/6)(3/4) = 1/8. Otherwise, I would choose D.

[anik1989]

wrong ans

[tommywallach]

Anik,

I'm sorry to be like this, but you need to stop posting questions from disreputable sources. I realize you just want an explanation, but it means I have to explain to everyone who views the post that what they are looking at is NOT relevant to studying for the GRE (which this question isn't). The probability tested on the GRE is very straightforward, not trickery like this (as far as I've seen). Please, in the future, only post real GRE questions, and try to post them with some question from your end (i.e. "I tried to solve this way, but it didn't work. Why not?). Also, please post the answer choices. You keep saying questions are numeric entry, but those questions are quite rare on the test.

Anyway, the answer to the question is 3/4. They already told you that he always tells the truth 3 out of 4 times. It doesn't matter what the roll is.

-t

[anik1989]

i saw this question from GMAT PREP. when i saw them i realized that i can not solve even a single one. i thought it should be learnt to get well prepared for gre. till now i dont know whether the real gre questions are so harder or medium level. i am sorry for posting this. would you please give me any link or mail any documents that contains recent real gre question. again sorry for your inconvenient.

Anik
B.PHARM
Khulna University, Bangladesh
anik.ku.pharmacy@gmail.com
8801673191973

[tommywallach]

Hey Anik,

There are plenty of materials available for studying for the GRE. A simple online search will help you find them.

-t