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 does represent 'and' in that code ?

• A. $2$
• B. $5$
• C. $8$
• D. $3$

Answer 1

The correct option is C $8$

In the first and third statements, the common code digit is ${}^{\prime }{5}^{\prime }$ and the common word is 'good'. So, ${}^{\prime }{5}^{\prime }$ means 'good'.
In the second and third statements, the common code digit is ${}^{\prime }{3}^{\prime }$ and the common word is 'bad'. So, ${}^{\prime }{3}^{\prime }$ means 'bad'.
Thus, in the third statement ${}^{\prime }{8}^{\prime }$ means 'and'.
Hence, option $\left(C\right)$ is the correct answer.