Multiple choice

The binary number 111010 on conversion to octal number is ______.

  1. 81

  2. 72

  3. 71

  4. 38
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

To convert binary to octal, group the binary digits into sets of 3 from right: 111 010₂. Convert each 3-bit group: 111₍₂₎ = 7₍₈₎, 010₍₂₎ = 2₍₈₎. Therefore 111010₂ = 72₈.

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