In a music school, three instruments are taught: Tabla, Violin and Guitar. Out of 278 students in the school, 20 learn Tabla and Violin, 23 learn Violin and Guitar and 21 learn Tabla and Guitar. 9 students learn all three instruments. It is known that equal number of seats in all three instrument classes. (If a student is learning Guitar as well as Tabla, then he occupies two seats: one in Tabla Class and one in Guitar Class)
Determine the number of students who have occupied seats in Tabla and Violin Class but not in Guitar Class.
In a music school, three instruments are taught: Tabla, Violin and Guitar. Out of 278 students in the school, 20 learn Tabla and Violin, 23 learn Violin and Guitar and 21 learn Tabla and Guitar. 9 students learn all three instruments. It is known that equal number of seats in all three instrument classes. (If a student is learning Guitar as well as Tabla, then he occupies two seats: one in Tabla Class and one in Guitar Class)
Determine the number of students who have occupied seats in Tabla and Violin Class but not in Guitar Class.
The correct option is B 11
Going by the information given in the question, we get the three sets venn diagram as:
Hence, no. of students who have occupied the seat in Tabla and Violin Class, but not in Guitar Class = 20 – 9 = 11. Hence option (b)
Going by the information given in the question, we get the three sets venn diagram as:
Hence, no. of students who have occupied the seat in Tabla and Violin Class, but not in Guitar Class = 20 – 9 = 11. Hence option (b)
