ISRO 2017-ECE Number system

Question

The Gray code for ($A5$) $16$ is equivalent to

• A. $10010101$
• B. $11010101$
• C. $11011111$
• D. $11011011$

Comments

Binary equivalent for (A5)H is 10100101

Gray code for equivalent binary is : 11110111

So options are given wrong.

Answer 1

Binary equivalent for A5 is: 1010 0101

Equivalent gray code is:       1111 0111

Comments

Yes... None of the options is correct. I hope ISRO might have discarded this question!

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None of the answer is correct

Answer 2

$A5$ in binary is : $1010 0101$

Grey code is calculated as: