Question

In a certain code, $‘256’$ means ‘red colour chalk’; $‘589’$ means ‘green colour flower’ and $‘245’$ means ‘white colour chalk’. Which digit in that code means white.

Answer 1

Find the required condition.

Given:

(i) $256$ means red color chalk

(ii) $589$ mean green color flower

(iii) $245$ means white color chalk

In (i), (ii), and (iii) color is common in statements and $5$ is common in code. Hence $5$ means color.

In (i), (iii) chalk is common in a statement and $2$ is common in code. Hence $2$ means chalk.

In (iii) $2$represents chalk, $5$ represents the color. Hence $4$ represents white.

Therefore digit $4$ means white.