Convert 77 to a number in base two

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Mathematics WAEC 1992

Convert 77 to a number in base two

  • 1001 101 checkmark
  • 111001
  • 100110
  • 10101
  • 10011

The correct answer is: 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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