In a classroom, The total number if students in the class = 36
1/6 of the students wearing blue shirt
i.e. 1/6 of 36 students wearing blue shirt :

So, Number of students wearing blue shirts = 6
2/3 are wearing white shirts
i.e. 2/3 of 36 students wearing white shirt :

Number of students wearing white shirts = 24
Number of students wearing white shirt or blue shirt = 24 + 6
Number of students wearing white shirt or blue shirt = 30
Number of students not wearing white shirt or blue shirt = Total number of students - Number of students wearing white shirt or blue shirt
Number of students not wearing white shirt or blue shirt = 36 - 30
Number of students not wearing white shirt or blue shirt = 6
So, Number of students are wearing a short other than white or blue is 6
Answer : D)
Number of students are wearing a short other than white or blue is 6