Computer Fundamentals - Engineering

Q1:

Conversion of an octal number 1428 to binary number is

A 11000102

B 1101102

C 11000112

D 11011012

E None of the above

ANS:A - 11000102

142 has base 8 for binary.

1 can be written as 001.
Similar way 4 as 100.

And 2 as 010.
Now write 142 as 001100010.

This is binary form.