1.  Consider the following statements 
P : Suman is brilliant 
Q : Suman is rich 
R : Suman is honest 
The negation of the statement "Suman is brilliant and dishonest if and only if Suman is rich" can be expressed as

1) 
2) 
3) 
4) 
A. 1
B. 2
C. 3
D. 4

Answer: Option D

Explanation:

Suman is brilliant and dishonest is P ~ R

Suman is brilliant and dishonest iff suman is rich is

Q  (P ~ R)

Negative of statement is expressed as

~ (Q  (P  ~ R)).