Question

In a certain code '247' means spread red carpet' ;
256' means dust one carpet' and '264' means
one red carpet'. Which digit in that code means
dust'?

• A. $2$
• B. $3$
• C. $5$
• D. $6$

Answer 1

Answer: (C)

$5$

Given, 'Spread red Carpet' $\equiv$ '247...(i)
'dust one Carpet'$\equiv$ '256'...(ii)
and 'one red Carpet' $\equiv$ '264'...(iii)
From equations (ii) and (iii), One' and Carpet' are coded as 2' and 6' or 6' and 2' .From equation (ii), dust' is coded as '5'.