The binary equivalent of the decimal number 0.4375 is —

2022

The binary equivalent of the decimal number 0.4375 is —

  1. A.

    0.0111

  2. B.

    0.1011

  3. C.

    0.1100

  4. D.

    0.1010

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Correct answer: A

Convert 0.4375 to binary by multiplying the fractional part by 2 and recording the integer parts:

  1. 0.4375 × 2 = 0.875 → bit 0

  2. 0.875 × 2 = 1.75 → bit 1

  3. 0.75 × 2 = 1.5 → bit 1

  4. 0.5 × 2 = 1.0 → bit 1

Collect the bits after the point (in order): 0.0111

Alternate method: express 0.4375 as a sum of negative powers of 2:

  • 0.25 = 2⁻2 → binary 0.01

  • 0.125 = 2⁻3 → binary 0.001

  • 0.0625 = 2⁻4 → binary 0.0001

Summing these binary fractions: 0.01 + 0.001 + 0.0001 = 0.0111

Therefore, the binary equivalent of 0.4375 is 0.0111

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