In a certain language, 'pre nat bis' means 'smoking is harmful';
'vog dor nat' means 'avoid harmful habit' and
'dor bis yel' means 'please avoid smoking'.
Which of the following means 'habit' in that language ?
In a certain code, '247' means 'spread red carpet' ; '256' means 'dust one carpet' and '234' means 'one red carpet'. Which digit in that code means 'dust' ?