In a certain coding system, 'Read this book’ is coded as ‘689', ‘This book is useful’ is coded as ‘9675’, and ‘Useful book is good’ is coded as '5479'. What is the code for 'This book is good’ in this system?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e 4965.
The logic used here is:
'Read this book’ is coded as ‘689', ‘This book is useful’ is coded as ‘9675’, and ‘Useful book is good’ is coded as '5479'
So, from this,
Code for word read = 8
Code for word this = 6
Code for word book = 9
Code for word is = 7 or 5
Code for word useful = 7 or 5
Code for word good = 4
Thus, code for 'This book is good' is 6945.
Hence, option 2 is the correct answer.