Which of the following lists the number of points at which

[vijay.gmat2011]

I agree. Even touching at one point is considered as intersection. Two lines intersect only at one point, but it's not defined as "tangetial" - Being a tangent is subset of intersection points applicable for circles.

[RonPurewal]

I agree. Even touching at one point is considered as intersection. Two lines intersect only at one point, but it's not defined as "tangetial" - Being a tangent is subset of intersection points applicable for circles.

the definition of intersection is not something one can "agree" or "disagree" with. if a point (or more than one point) is in both of two figures, then that's an intersection. period, end of story; this is a universal mathematical definition.

[krishnan.anju1987]

Same prob with me. I thought the question meant no of intersection points and of course I thought of tangential lines and thought they were non intersecting. Funnily I arrived on 2,4,6 which is also choice and got it wrong.. This makes it clearer now. Thanks for the explanation

[RonPurewal]

Same prob with me. I thought the question meant no of intersection points and of course I thought of tangential lines and thought they were non intersecting. Funnily I arrived on 2,4,6 which is also choice and got it wrong.. This makes it clearer now. Thanks for the explanation

good. just make sure you retain this definition for future problems.

[matthewtcolo]

intersect Two geometrical figures or curves are said to intersect if they have at least one point in common.

"intersect" The Concise Oxford Dictionary of Mathematics. Christopher Clapham and James Nicholson. Oxford University Press, 2009. Oxford Reference Online. Oxford University Press. University of Pennsylvania. 9 August 2012 <http://www.oxfordreference.com/views/ENTRY.html?subview=Main&entry=t82.e1512>

[tim]

cool

[studsar87]

Actually they are right Ron. In India we are specifically taught that for 2 lines or shapes to intersect it is essential it has to pass through them. That is why I thought 1 couldn't be the answer and that the answer had to A or B.

On another note, I took 4 MGMAT Full length tests and scored 710, 670, 680 and 690 on them and scored 680 on my GMATPrep. I am taking my exam day after tomorrow. Could you give me a range or an estimate or even confidence interval of what score I might expect. (I know every test taker is different, am just asking statistically to calm my nerves)

[jnelson0612]

Actually they are right Ron. In India we are specifically taught that for 2 lines or shapes to intersect it is essential it has to pass through them. That is why I thought 1 couldn't be the answer and that the answer had to A or B.

On another note, I took 4 MGMAT Full length tests and scored 710, 670, 680 and 690 on them and scored 680 on my GMATPrep. I am taking my exam day after tomorrow. Could you give me a range or an estimate or even confidence interval of what score I might expect. (I know every test taker is different, am just asking statistically to calm my nerves)

Hi there,
Congratulations--those are good scores! The GMATPrep has a 30 point standard deviation and it is the best predictor of your eventual score. Thus, you have about a 70% chance of scoring in the 650-710 range. Good luck!

[AnuH387]

thanks a lot for the image Ron ji..

[RonPurewal]

hi, do you have a question? this discussion has been dormant for more than three years!

thanks.

[AnuH387]

Well, I just wanted to thank for the solutions explained here .. I did not notice the date .. i'll refrain bumping the thread again .. I'll keep check of my gratitude spirits !!!

[RonPurewal]

ok.