csateasy
In a certain code, ‘256’ means ‘red colour chalk’, ‘589’ means ‘green colour flower’ and ‘254’ means ‘white colour chalk’. The digit in the code that indicates ‘white’ is
- A.2
- B.4
- C.5
- D.8
▶ Answer & Explanation
Correct answer: B. 4
By comparing the codes for 'red colour chalk' (256) and 'white colour chalk' (254), we can identify common digits. Both codes share '2' and '5'. Since 'chalk' is common to both phrases, and the digit '2' is common, '2' likely represents 'chalk'. Similarly, 'colour' is also common. Comparing 'red colour chalk' (256) and 'green colour flower' (589), '5' is common. Thus, '5' represents 'colour'. In the code for 'white colour chalk' (254), if '2' is 'chalk' and '5' is 'colour', then '4' must represent 'white'.
Source: UPSC csat 2017