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1.John has a CD collection consisting of 5 recordings of brass bands, 8 of opera, and 7 of rock. In a rush to go on

1.John has a CD collection consisting of 5 recordings of brass bands, 8 of opera, and 7 of rock. In a rush to go on holiday, he picks 3 CDs randomly to take with him. Find the chance that:

(a) all three CDs are of brass bands

(b) there are two brass bands and one rock

(c) there is one of each type of music.

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