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галька97
@галька97
July 2022
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Решить:1.46 (все),1.59 (бгд),1.47 (бгд)
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natyak
1.46
а) 5!=1*2*3*4*5=120
б) 6!=120*6=720
в) 7!/5!=5!*6*7/5!=42
г) 2000!/1999!=1999!*2000/1999!=2000
д)15!/10!5!=10!*11*12*13*14*15/10!5!=11*12*13*14*15/1*2*3*4*5=3003
е)6!/13*14*15*16=3/91
ж) 5!(1+6+42)/7!(8-1)=5!*49/7!*7=1/6
з) 16!(17*18-17*17-16)/16!(17-1)=1/16
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галька97
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Answers & Comments
а) 5!=1*2*3*4*5=120
б) 6!=120*6=720
в) 7!/5!=5!*6*7/5!=42
г) 2000!/1999!=1999!*2000/1999!=2000
д)15!/10!5!=10!*11*12*13*14*15/10!5!=11*12*13*14*15/1*2*3*4*5=3003
е)6!/13*14*15*16=3/91
ж) 5!(1+6+42)/7!(8-1)=5!*49/7!*7=1/6
з) 16!(17*18-17*17-16)/16!(17-1)=1/16