Ответ:
Объяснение:
1) 5!/(4!*(5-4)!)=5!/(4!*1!)=5!/4!=5
2) 5!/(3!*(5-3)!)=5!/(3!*2!)=5*4/2*1)=20/2=10
3) 6!/(3!*(6-3)!)= 6!/(3!*3!)=720/(6*6)=720/36=20
4)11!/(9!*(11-9)!)=11!/(9!*2!)=11*10/2*1=110/2=55
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Ответ:
Объяснение:
1) 5!/(4!*(5-4)!)=5!/(4!*1!)=5!/4!=5
2) 5!/(3!*(5-3)!)=5!/(3!*2!)=5*4/2*1)=20/2=10
3) 6!/(3!*(6-3)!)= 6!/(3!*3!)=720/(6*6)=720/36=20
4)11!/(9!*(11-9)!)=11!/(9!*2!)=11*10/2*1=110/2=55