Big number

hat is the remainder when dividing number 10 to 47 - 111 by number 9?

Result

x =  7

Solution:

c=1047=99999....9999889 (c+110)c=10^{47}=99999 .... 9999889 \ \\ (c+110) % 9=0 \ \\ x=9 -(1+1+0)=7



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