Convert octal number (630.4) into decimal:
2017
Convert octal number (630.4) into decimal:
- A.
407.5
- B.
408.5
- C.
408.4
- D.
407.4
Attempted by 35 students.
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Correct answer: B
For the octal number 630.4, convert each place value to decimal.
Integer part: 6 x 64 + 3 x 8 + 0 x 1 = 384 + 24 + 0 = 408.
Fractional part: 4 x 1/8 = 0.5.
Total = 408 + 0.5 = 408.5.