Binary 1000, when subtracted from binary 1111 is – Digital Electronics MCQ#15

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Binary 1000, when subtracted from binary 1111 is:

  1. 1000
  2. 111
  3. 1010
  4. 1110

Correct answer: 2. 111

Explanation: You can either perform a direct calculation or can convert binary to decimal and then perform the calculation.

Method 1: 1111 – 1000 = 111

Method 2: (1111)2 = (15)10 & (1000)2 = (8)10

15 – 8 = 7

(7)10 = (0111)2

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