A basketball team has three pure centers, four pure forwards, four pure guards and one swing- man who can play either guard or forward. A "pure" position player can play only the designated position. If the coach must start a lineup with one center, two forwards and two guards, how many possible lineups can the coach choose?

We conclude that he coach can choose  252  lineups.

Step-by-step explanation:

We have three pure centers, four pure forwards, four pure guards and one swing- man who can play either guard or forward.

First case: swing- man play guard.

So now we count the number of combinations: to select from 3 centers 1 center, from 4 forwards to choose 2, and from 4 from the guards to choose 1.

Second  case: swing- man play forward.

So now we count the number of combinations: to select from 3 centers 1 center, from 4 forwards to choose 1, and from 4 from the guards to choose 2.

Third case: swing- man not play.

So now we count the number of combinations: to select from 3 centers 1 center, from 4 forwards to choose 2, and from 4 from the guards to choose 2.

Now, we get 72+72+108=252.

We conclude that he coach can choose  252  lineups.

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