Mr. Ravi is thin but healthy.

 At least three empty boxes.

 No empty box. 

What is a function? Explain different types of functions with examples. 

 What is a proper subset? Write the number of proper subsets of the Set {2, 3, 4, 5, 6, 7, 8, 9} (2 Marks) [cite: 7, 8, 11]

Construct logic circuites for the following Boolean expressions:

i) (x+yz) + (yz)' + (z'y)

ii) ( x'y) (xz') (y'z) + xyz

What is a proper subset ? Write the number of proper subsets of the Set 

{2, 3, 4, 5, 6, 7, 8, 9}