Data Sufficiency

Please see the attached pic.

I'm a noob but I'll take a shot in the dark.

Answer: B

Is xy<6?

First thing to note is that this is a yes/no question. So write down yes/no.

1.) x<3 and y<2
INSUFFICIENT:
If x is 2 and y is 1 then yes, xy is less than 6. But what if x is -5 and y is -2? Then it would be +10. So it is insufficient data.

2.) 1/2 < x < 2/3 and y^2 < 6

We know x is a positive fraction. A spot in between 1/2 and 2/3. So x is a positive fraction. y^2 (anything squared is always positive)is less than 6. This must mean that xy is less than 6.

So the answer is "NO" however, it doesn't matter. We have enough data to decide with 2.) so the answer is B.

Someone please correct me if I am wrong.

p2dski wrote:I'm a noob but I'll take a shot in the dark.

Answer: B

Is xy<6?

First thing to note is that this is a yes/no question. So write down yes/no.

1.) x<3 and y<2
INSUFFICIENT:
If x is 2 and y is 1 then yes, xy is less than 6. But what if x is -5 and y is -2? Then it would be +10. So it is insufficient data.

2.) 1/2 < x < 2/3 and y^2 < 6

We know x is a positive fraction. A spot in between 1/2 and 2/3. So x is a positive fraction. y^2 (anything squared is always positive)is less than 6. This must mean that xy is less than 6.

So the answer is "NO" however, it doesn't matter. We have enough data to decide with 2.) so the answer is B.

Someone please correct me if I am wrong.

IMO C.. Let me know if i'm correct.. I'll post my solution

I say B too.

I say B too.

p2dski wrote: So the answer is "NO" however, it doesn't matter. We have enough data to decide with 2.) so the answer is B.

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I wonder what you mean by that. B gives us the answer that "yes, xy < 6".