Find the missing number in the addition of the following numbers, in base seven \(\begin{matrix}...

WAEC 2000

Find the missing number in the addition of the following numbers, in base seven
\(\begin{matrix}
4 & 3 & 2 & 1\\
1 & 2 & 3 & 4\\
* & * & * & *\\
1&2&3&4&1
\end{matrix}\)

A. 3453
B. 5556
C. 6016
D. 13453

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Correct Answer: Option A

Explanation

4321\(_7\) + 1234\(_7\) = 5555\(_7\)

Missing number = 12341\(_7\) - 5555\(_7\)

= 3453\(_7\)

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Find the missing number in the addition of the following numbers, in base seven \(\begin{matrix}...

Correct Answer: Option A

Explanation

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