Question

In a certain code language, '743' means mangoes are good' ; ''657' means eat good food' and '934' means mangoes are ripe'. Which digit means ripe' in that language ?

• A. $9$
• B. $4$
• C. $5$
• D. $7$

Answer 1

The correct option is A $9$

Given,Mangoes are good' $\equiv$ '743' ...(i)
'Eat good food' $\equiv$ '657'...(ii)
and 'Mangoes are ripe' $\equiv$ '934'... (iii)
From equations (i) and (ii), good' is coded as 7', From equations (i) and (iii), 'Mangoes' and 'are' are coded as 4' and 3' or 3' and 4'.
From equation (iii), ripe' is coded as 9',