# Thread: Value of xy

1. ## Value of xy

If 0 is less than or equal to x which is less than or equal to 4 and y < 12, which of the following CANNOT be the value of x•y?

A. -2
B. 0
C. 6
D. 24
E. 48

I do not understand the logic here.

2. ## Re: Value of xy Originally Posted by harpazo If 0 is less than or equal to x which is less than or equal to 4 and y < 12, which of the following CANNOT be the value of xy?

A. -2
B. 0
C. 6
D. 24
E. 48

I do not understand the logic here.
How large can $4y$ be?

3. ## Re: Value of xy Originally Posted by Plato How large can $4y$ be?
I don't get it.

4. ## Re: Value of xy Originally Posted by Plato How large can $4y$ be? Originally Posted by harpazo I don't get it.
If you truly don't get this, then you have not gotten anything in this whole set of questions.
You need to hire a private tutor, someone who can take the time to sit down with you.
I see on other way to address your profound lack of mathematical understanding.
Now it may simply be you unwillingness to exert any effort. But in any case, I see no way we can help you.

5. ## Re: Value of xy Originally Posted by Plato If you truly don't get this, then you have not gotten anything in this whole set of questions.
You need to hire a private tutor, someone who can take the time to sit down with you.
I see on other way to address your profound lack of mathematical understanding.
Now it may simply be you unwillingness to exert any effort. But in any case, I see no way we can help you.
Thank you for the negativity.

6. ## Re: Value of xy

Negativity it's NOT, truth it IS...

7. ## Re: Value of xy

If 0 <= x <= 4 and y < 12...

I understand that xy CANNOT be 48 because that requires either 6 * 8, and both numbers exceed the permissible x interval; or 4 * 12, which in the best case scenario, is no good because this means 12 < 12, a false statement, although 4 <= 4 is true. So, my answer is E. Correct?

8. ## Re: Value of xy Originally Posted by harpazo If 0 <= x <= 4 and y < 12...

I understand that xy CANNOT be 48 because that requires either 6 * 8, and both numbers exceed the permissible x interval; or 4 * 12, which in the best case scenario, is no good because this means 12 < 12, a false statement, although 4 <= 4 is true. So, my answer is E. Correct?
Yes E is the correct answer.

Since 0<x<4 and y<12, then x*y can't be 48 or larger.

Just to check the other options:

A. -2 = 2*-1 ... all good

B. 0 = 3*0 … all good

C. 6 = 2*3 .. all good

D. 24 = 3*8 … all good

(there are other combos that also work)

9. ## Re: Value of xy Originally Posted by Debsta Yes E is the correct answer.

Since 0<x<4 and y<12, then x*y can't be 48 or larger.

Just to check the other options:

A. -2 = 2*-1 ... all good

B. 0 = 3*0 … all good

C. 6 = 2*3 .. all good

D. 24 = 3*8 … all good

(there are other combos that also work)
Thank you. I will not post daily questions anymore. I realize now that this site is not a tutoring school. I will use the site from time to time as truly needed.