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JAMB 2015 · UTME · Q14

Write the decimal number 39 in base 2.

Worked solution (try it first)
  1. Write 39 as a sum of powers of two: 39=32+4+2+139 = 32 + 4 + 2 + 1.
  2. Put a 1 in the 32, 4, 2 and 1 places and 0 in the 16 and 8 places.
  3. So 39=100111239 = 100111_2, option A.

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