55!/(51! x 4!) = (55 x 54 x 53 x 52 x 51!) / (51! x 4!) = (55x54x53x52)/4! = 341055
(as guest found...just thought I would show a little more of the reason/method)
55!/(51! x 4!) = (55 x 54 x 53 x 52 x 51!) / (51! x 4!) = (55x54x53x52)/4! = 341055
(as guest found...just thought I would show a little more of the reason/method)