@getukudo
You stand in the best position to know the right type of business to invest the N10,000 in. To start with, you need to understand the fact that people only pay money for two things
1. Good feelings and
2. Solutions to Problems
If you are able to identify the needs of the human beings around where you reside, then you can list down the kind of solutions you can provide for those needs.
After listing down the various business opportunities you have identify, the next step is to choose one that you are very passionate about.
For example, if you're living in a place where there is water scarcity, you can decide to provide water for people using jerry-cans. However, you may not make money from that business if you are the type that feels bad about people looking down on you because of the nature of your job. In that case, you will need to select another opportunity on your list.
As you can see from the little explanation given above, we cannot give you a perfect answer because we do not know what the people you want to do business with "NEED"

Remember the CUSTOMER is KING, not because you like him, but because he is the one having the MONEY!

I suggest you read this post
http://naijaecash.com/2008/03/22/how-to-choose-an-online-business/ even though it was written with online business in mind, it nonetheless have some tips that can be applied "offline". It will definitely give you more ideas on how to go about choosing a business. I wish you all the best.