Answer Q 3 and name the symbol written after = sign in part (f)

Q3. Draw the Venn diagrams to show the following relations.
(a) $\mathrm{P}\subseteq \mathrm{Q}$
(c) $\mathrm{P}\cap \mathrm{Q}=\mathrm{P}$
(d) $\mathrm{P}\cup \mathrm{Q}=\mathrm{Q}$

Dear student, 
The venn diagram for first,third and forth query is below

Here A is for set P and B is for Q and U is universal set.
The first part is P is subset of Q.
The third part is P intersection Q is equal to P
The fourth part is P union Q is equal to Q. These all parts can be represented by same venn diagram that is provided above. 
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Regards.