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ISRO-DEC2017-40

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Let $M=11111010$ and $N=00001010$ be two $8$-$bit$ two's complement number.Their product in two's complement is

  1. $11000100$
  2. $10011100$
  3. $10100101$
  4. $11010101$
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  • Let us convert given numbers to decimal
    • 11111010 = - ( 00000110) =  -6
    • 00001010 = 10
  • Product =   -6 * 10 =   - 60
  • twos complement of 60 is 00111100
  • Hence    - 60 =  11000100

Answer is A

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