Find the number of 5 card hands that can be drawn from a deck of 52 cards
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OpenStudy (zarkon):
a Combination
jimthompson5910 (jim_thompson5910):
There are
52 cards for the 1st draw
51 cards for the 2nd draw
50 cards for the 3rd draw
49 cards for the 4th draw
48 cards for the 5th draw
So there are 52*51*50*49*48 = ??? ways total to draw 5 cards IF ORDER MATTERS
Since order does NOT matter, this means that we must divide the result by 5! = 5*4*3*2*1 = 120 to remove any duplicates.
jimthompson5910 (jim_thompson5910):
I should say
"52 cards for the 1st draw"
really means
"52 cards to choose from for the 1st draw"
and this rewording applies to each line from 52 on down to 48
OpenStudy (anonymous):
so I would multiply 52 5 times?
jimthompson5910 (jim_thompson5910):
no, not quite
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jimthompson5910 (jim_thompson5910):
that would only be the case if you replaced each card you drew
OpenStudy (anonymous):
so i would divide
jimthompson5910 (jim_thompson5910):
you would first compute 52*51*50*49*48
jimthompson5910 (jim_thompson5910):
then you would divide by 120
OpenStudy (anonymous):
so 2598960 would be the answwe
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