7. What is the recurrence relation and the general solution if the characteristics' roots

are 2 ,-2 and 3 of a recurrence relation?

Assignment

In a certain class of 40 students ,28 where listed as exercise book reader ,and 16 as book reader while 8 were listed asexercise book and book readers . Then find out how many students read neither exercise book nor book.

A survey among 100 students show that of the three ice cream flavors Vanilla , Chocolate and Strawberry ,50 students like vanilla ,43 likes chocolateand 28 likes strawberry ,13 likes vanilla and chocolate ,11 likes chocolate and strawberry ,12 likes strawberry and vanilla and 5 likes all of them.

Then find the number of students surveyed who like each of the following flavors

Chocolate but not strawberry.

Chocolate and strawberry but not vanilla.

Vanilla or chocolate but not strawberry.