Data Sufficiency

There are 300 people in a conference hall. Each person is either an engineer or a professor or both or only a journalist. What is the probability that a person randomly picked from the hall is a journalist?

(1) There are 200 people who are an engineer or a professor
(2) There are 200 people who are exclusively an engineer or a professor

OA is A

My reasoning:
Statement (1) states that E + P + EP= 200
Based on this, the probability of being a journalist can be calculated; so, statement (1) is sufficient

However, statement (2) says that E + P=200

My question:
Is this a typical GMAT question because, according to my reasoning, the statements collide.

I haven't worked on the question. But on your other query, statements can't collide on the GMAT. Statements have to be true and compliment each other.

But in this case obviously A is sufficient.

Further, both statements together are giving that EP is 0.

They are not necessarily colliding!!

ikaplan wrote:There are 300 people in a conference hall. Each person is either an engineer or a professor or both or only a journalist. What is the probability that a person randomly picked from the hall is a journalist?

(1) There are 200 people who are an engineer or a professor
(2) There are 200 people who are exclusively an engineer or a professor

OA is A

My reasoning:
Statement (1) states that E + P + EP= 200
Based on this, the probability of being a journalist can be calculated; so, statement (1) is sufficient

However, statement (2) says that E + P=200

My question:
Is this a typical GMAT question because, according to my reasoning, the statements collide.

Hi, what's the source?
Is there any explanation given with the OA, is yes please post!
thanks.

Source: NOVA's DS Prep Course, p.90

The explanation was in line with my reasoning.

akhilsuhag is right: I didn't consider that EP can be 0. In that case, both statements are true and compliment each other.

Some expert please respond on this one.

Thanks
Mankey