Question

the game of the euchre uses just 9s,10s,jacks,queens,kings and aces from a standard deck of 52 cards. how many five-card euchre hands have all black cards.
is the right answer 495 ways
which i got by doing 12C5 x 40C0
= 495 ways
How did you get 495 from 12C5
12C5 = 792 and of course 40C0 = 1

so it should be 792

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