mbh67 wrote:

Yep that's the one, there are no answers for me to see, but I know the answer mathematically at least

mbh67........ there are couple of things...... let me take them one by one.

1. As you have joined the community just 2 days back ( <5) and your post count is also less (<5) .... your ability to participate is a bit restricted. But it will be all good from 5th day.

2. The question you were referring is a DS question. Let me elaborate a bit on this.

DS means Data Sufficiency. This is an unique type question and (as far as my knowledge goes) only appears on GMAT. These type questions consist of a question followed by two statements. Your job is to decide whether the information in the statements (taken singly or together) is sufficient to answer the question.So the answer choice is already standardized here .

Option A: Statement 1 is sufficient to answer the Question.

Option B: Statement 2 is sufficient to answer the Question.

Option C: IF Statement 1 & Statement 2 are taken together, then only it sufficient to answer the Question.

Option D: Statement 1 & Statement 2 , each alone is sufficient to answer the Question.

Option E: EVEN IF Statement 1 & Statement 2 are taken together, it it is not sufficient to answer the Question.

MAIN GOAL is to determine the sufficiency of the statements. ( We donot need to determine the answer , Rather we need to determine

if we can determine what the question has asked for )

I know this is a non-traditional idea. Thus , to get a hang of it I would suggest you to go through the link below and try your hand on some 500-level questions:

https://gmatclub.com/forum/ds-question- ... 28728.htmlAgain..... I am extremely confident that you can move on to 700-level within very few days ( as you have mentioned you are going to be a math -PHD soon ) , but still i would go through the 500-level first ........ just to get a hang. Just assume that you are going to learn 3-D geometry and to do that you need to understand 2-D geometry.

Hope it helps.

_________________

Please let me know if I am going in wrong direction.

Thanks in appreciation.