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ilnarik22
@ilnarik22
August 2022
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найдите значение выражения: 1)10!/8!*2!
2) 15!*4!/18!
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twink1y1998
Доброе утро
1) 10!/(8!*2!)= (1*2*3....10)/(1*2*3...*8)*(1*2)=(9*10)/2=45
2)(15!*4!)/18!=(1*2*3*4*5*6*7....15*1*2*3*4)/(1*2*3.....18)=(1*2*3*4)/(16*17*18)=1/(17*12)=1/204
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Answers & Comments
1) 10!/(8!*2!)= (1*2*3....10)/(1*2*3...*8)*(1*2)=(9*10)/2=45
2)(15!*4!)/18!=(1*2*3*4*5*6*7....15*1*2*3*4)/(1*2*3.....18)=(1*2*3*4)/(16*17*18)=1/(17*12)=1/204