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Convert 77 to a number in base two

Mathematics
WAEC 1992
Convert 77 to a number in base two
  • A. 1001 101
  • B. 111001
  • C. 100110
  • D. 10101
  • E. 10011
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Correct Answer: Option A
Explanation
\(\begin{array}{c|c} 2 & 77 \\ \hline 2 & 38 R1 \\ 2 & 19 R0 \\ 2 & 9 R1 \\ 2 & 4 R1 \\ 2 & 2 R0 \\ 2 & 1 R0 \\ & 0 R1\end{array}\)

77ten = 1001101two
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