In a certain code,
‘boy likes games’ is coded as 'tu vw xy'
‘girl likes music’ is coded as 'za vw rs'
‘music games hobby’ is coded as 'rs xy pq'
What is the code for hobby ?

The correct option is pq.

To find the code for the word "hobby", we can compare the given coded sentences and identify the common words and their corresponding codes through the process of elimination:
1. "boy likes games" is coded as "tu vw xy" (Statement 1)
2. "girl likes music" is coded as "za vw rs" (Statement 2)
3. "music games hobby" is coded as "rs xy pq" (Statement 3)

Step 1: Find the code for "likes"
Comparing Statement 1 and Statement 2, the common word is "likes" and the common code is "vw".
Therefore, the code for "likes" is "vw".

Step 2: Find the code for "games"
Comparing Statement 1 and Statement 3, the common word is "games" and the common code is "xy".
Therefore, the code for "games" is "xy".

Step 3: Find the code for "music"
Comparing Statement 2 and Statement 3, the common word is "music" and the common code is "rs".
Therefore, the code for "music" is "rs".

Step 4: Find the code for "hobby"
In Statement 3 ("music games hobby" coded as "rs xy pq"), we have already identified:
- The code for "music" is "rs"
- The code for "games" is "xy"
The only remaining word is "hobby" and the only remaining code is "pq".
Therefore, the code for "hobby" is "pq".