How many teams of 7 players can be chosen from 17 candidates if A, B, C, D are the only candidates for 3 positions and can play no other position?
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i take it that **one** team is to be chosen for 7 positions, and that apart from A,B,C,D, everyone can play in any of 6 positions
from A,B,C,D, we can choose only 3 in 4c3 = 4 ways
from the remaining 13, we choose 4 in 13c4 = 715 ways
ans: 4*715 = 2860 <-----
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from A,B,C,D, we can choose only 3 in 4c3 = 4 ways
from the remaining 13, we choose 4 in 13c4 = 715 ways
ans: 4*715 = 2860 <-----
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