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 Post subject: Re: math (test 1, question 26): probability, x,y-planePosted: Mon Jun 18, 2012 3:55 pm

Joined: Sun May 30, 2010 3:15 am
Posts: 424
Does this question account for areas where X is positive and Y is negative? For example, in the fourth quadrant, aren't all X values greater than Y values? Wouldn't the same apply for half of the third quadrant as well?

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 Post subject: Re: math (test 1, question 26): probability, x,y-planePosted: Mon Jun 18, 2012 4:03 pm

Joined: Sun May 30, 2010 2:23 am
Posts: 498
Quote:
Does this question account for areas where X is positive and Y is negative?
No, the question statement implies Quadrant 1 only.
Quote:
... , what is the probability that x > y > 0?

If we didn't have that "> 0", then your reasoning would be true, we would need to look into all quadrants.

Sometimes a little part of the information in a question statement slips the mind and it can affect the whole reasoning and lead to a wrong answer choice. Reading every word and symbol in a question statement is very important. Do not hurry, when reading the question statement.

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