Question: Target

Comment on Target

I really dislike these geometry + probability combined questions. I've noticed a few of them pop up in the reinforcement questions. Do they often appear on the actual GRE?
greenlight-admin's picture

Geometry/probability combination questions are pretty rare.

Hi Brent, I get to the reasoning of small circle ratio to large circle (4/10). However since question doesn't mention area anywhere, how will I know that is the area ratio of 2 circles that is required here? Or could we say that any circle involve radius mean most probably area calculation? Could you help clarify? Thanks Brent
greenlight-admin's picture

If you have a question with a smaller region inside a larger region, and your goal is to find the probability some random object hits the smaller region, then the probability will always equal the ratio of the smaller area to the greater area.

noted thanks

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