Source - http://maps.google.com/maps
there are some 10 countries which are touching the border with brazil
The South American countries of Chile and Ecuador do nor border Brazil.
The only countries in South America that share no border with Brazil are Ecuador and Chile.
Venezuela and Brazil border Colombia to the east.
Argentina and Paraguay are found along Brazil's southwestern border.
suriname,Brazil and Venezuela
Only 2 of the mainland countries of South America do not border Brazil: Ecuador and Chile.
Bolivia and Brazil
Venezuela, Suriname, and Brazil.
venezuala, suriname and Brazil
There are only two South American countries which does not share a border with Brazil. Those countries are Chile and Ecuador.
Did you mean which countries in South America do not border Brazil? If yes, they are Ecuador and Chile.