1. Using set notation;
The universal set contains {3,4,5,6,7,8,9,10,11,12,14,15,16} set P contains {3,4,5,6,9,12,14}
set Q contains {3,4,5,6,7,8,15,16}
set R contains {3,4,5,6,9,10,15}
Using this find
a. P ∩ Q ∩ R
b. P ∪ R
c. P ∪ Q
d. (P ∪ Q ∪ R)'
e. n( P ∩ Q ∩ C)
f. n( P ∩ Q ∩ C)'

2.In a class of 50 students, 25 watch channel A, 35 watch channel B. Every student watches at least one of these channels. Draw a venn diagram of this information and hence determine how many students watch (a) both programmes (b) channel B only

3. In a class of 80 students, every student had to study Economics or Geography, or both. If 65 students studied Economics and 50 students Geography, how many studied both subjects