6 Enemies of Students

If the students of a class can be grouped exactly into 6 or 8 or 10, then the minimum number of students in the class must be

The pie chart given below shows the number of students in 6 different sections. The total number of students is 1800. What is the difference between the number of students in section F to the number of students in section C?

The pie chart given below shows the number of students in 6 different sections. The total number of students is 1800. What is the ratio of number of students in section D to the number of students in section F and B?

In a music school 28 students learn trumpet, 30 students learn violin and 32 students learn guitar. 6 students learn trumpet and violin, 8 students learn violin and guitar, 10 students learn guitar and trumpet. The number of students who learn only one instrument is 54. Also 20 students learn only violin. Every student learn atleast one instrument out of the three instruments. Find the number of students in the music school.

In a music school 28 students learn trumpet, 30 students learn violin and 32 students learn guitar. 6 students learn trumpet and violin, 8 students learn violin and guitar, 10 students learn guitar and trumpet. The number of students who learn only one instrument is 54. Also 20 students learn only violin. Every student learn atleast one instrument out of the three instruments. Find the number of students who learn trumpet and guitar but not violin?

In a class, 18 students took Physics, 23 students took Chemistry and 24 students took Mathematics of these 13 took both Chemistry and Mathematics, 12 took both Physics and Chemistry and 11 took both Physics and Mathematics. If 6 students offered all the three subjects, find: (i) The total number of students.