ВЫЧИСЛИТЕ ПОЖАЛУЙСТА. Created by Dagser. algebra-ru

ВЫЧИСЛИТЕ ПОЖАЛУЙСТА...

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Verified answer

$\frac{9!\; +\, 10!\, +\; 11!}{12!\; -11!}=\frac{9!\, \cdot (1+10+10\cdot 11)}{11!\cdot (12-1)}=\frac{1+10+110}{10\cdot 11\cdot 11}=\frac{121}{10\cdot 121}=\frac{1}{10}=0,1$

2 votes Thanks 1

ivanfeoktistov

9!=362880

10!=3628800

11!=39916800

12!=479001600

делим дробь на 10

получается

(36288+362880+3991680)/(47900160-3991680)=

=4390848/43908480

=0.1

1 votes Thanks 1

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