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The number $N$ is a multiple of $7$. The base $2$ representation of $N$ is
10011010011ABC110_2.
Compute the ordered triple of digits $(A,B,C)$.

 Jul 16, 2024
 #1
avatar+1950 
+1

I didn't follow an algorithm. I legit tried every single possibilitility until I found 1. 

When wee have A, B, C = 1, 0, 1, we get the number 10011010011101110

Converting this into base 10, we have

(10011010011101110)2=(1×216)+(0×215)+(0×214)+(1×213)+(1×212)+(0×211)+(1×210)+(0×29)+(0×28)+(1×27)+(1×26)+(1×25)+(0×24)+(1×23)+(1×22)+(1×21)+(0×20)=(79086)10

 

Dividing by 7, we get 79086/7=11298

THUS, 

The answer is (A,B,C)=(1,0,1)

 

Thanks! :)

*I'm so tired

 Jul 16, 2024
edited by NotThatSmart  Jul 16, 2024

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