Ten telegenic contestants with a variety of personality disorders are to be divided into two “tribes” of three members each, tribe A and tribe B, for a competition. How many distinct groupings of two tribes are possible?  Choose the most appropriate option:
A) 120  B) 126  C) 252  D) 1200  E) 1260
My ans is 10C3 = 120   120
<result>A</result>
Ten telegenic contestants with a variety of personality disorders are to be divided into two “tribes” of three members each, tribe A and tribe B, for a competition. How many distinct groupings of two tribes are possible?