Find the missing number in the addition of the following numbers, in base seven \(\begin{matrix}...
MATHEMATICS
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
Correct Answer: A. 3453
Explanation
4321\(_7\) + 1234\(_7\) = 5555\(_7\)
Missing number = 12341\(_7\) - 5555\(_7\)
= 3453\(_7\)
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