A teacher has to choose the maximum different groups of three students from a total of six students. Of these groups, in how many groups there will be included in a particular student?\nOptions:\n(A) 6\n(B) 8\n(C) 10\n(D) 12\n(E) 15 Think first, then make a decision. Some random thoughts:
User
If students are A, B, C, D, E and F; we can have 6C3 groups in all. However, if we have to count groups in which a particular student (say A) is always selected we would get 5C2 = 10 ways of doing it. So the answer is (C).
Assistant