Question

The octal equivalent of 1100101.001010 is ______

(a) 624.12

(b) 145.12

(c) 154.12

(d) 145.21

I had been asked this question in class test.

I would like to ask this question from The Binary Number System in section Number Systems of Computer Fundamentals

Answer 1

The correct answer is (b) 145.12

To explain I would say: The octal equivalent is obtained by grouping the numbers into three, from right to left before decimal and from right to left after the decimal place.

Here,

    i.e. 145.12 is the octal equivalent of the number.