Question

In a certain code '256' means you are good' ;
637' means we are bad' and '358' means good
and bad'. Which of the following represents and'
in that code ?

• A. $2$
• B. $5$
• C. $8$
• D. $3$

Answer 1

Answer: (C)

$8$

Given, 'You are good' $\equiv$ '256'...(i)
'We are bad' $\equiv$ '637' ...(ii)
and 'Good and bad' $\equiv$ '358' ...(iii)
From equations (i) and (iii), 'good' is coded as '5'. From equations (ii) and (iii), 'bad' is coded as '3'.
From equation (iii), 'and' is coded as '8'.