[" In how many ways can a team of "6" horses "],[" be selected out of a stud of "16," so that "],[" there shall always be three out of "ABCA'B'C'],[" but never "AA',BB'" or "CC'" together."]

In how many ways can a team of 6 horses be selected out of a stud of 16, so that there shall always be three out of A B C A B C, but never A A, B B or C C together

In how many ways can a team of 6 horses be selected out of a stud of 16, so that there shall always be three out of A B C A B C, but never A A, B B or C C together

In how many ways can a team of 6 horses be selected out of a stud of 16, so that there shall always be three out of A B C A' B' C', but never A A', B B' or C C' together a. 840 b. 1260 c. 960 d. 720

In how many ways can a team of 6 horses be selected out of a stud of 16, so that there shall always be three out of A B C A' B' C', but never A A', B B' or C C' together a. 840 b. 1260 c. 960 d. 720

In how many ways can a team of 6 horses be selected out of a stud of 16, so that there shall always be three out of A B C A' B' C', but never A A', B B' or C C' together a. 840 b. 1260 c. 960 d. 720

In how many ways can a team of 6 horses be selected out of a stud of 16, so that there shall always be three out of A B C A' B' C', but never A A', B B' or C C' together a. 840 b. 1260 c. 960 d. 720

In how many ways can a team of 6 horses be selected out of a stud of 16, so that there shall always be three out of A B C A B C, but never A A, B B or C C together a. 840 b. 1260 c. 960 d. 720

In howmany ways can a team of 6 horses be selected out of stud of 16 so that there shall always be 3 out of A, B, C, A', B,'C' but never A A', BB', or CC' together.

The number of ways can a team of six horses be selected out of a stud of 16 so that there shall always be three out of A,B,C,D,E,F but never AD,BE or CF together,is

In how many ways can a committee of 4 be selected out of 12 persons so that a particular person may always be taken.