questionr
Early access
Exams
Joint Entrance Examination
Mathematics
Mathematical Reasoning
Question 92
Question 92 of 103
Easy
MCQ
The negation of the expression \[q \vee \left( {( \sim \,q) \wedge p} \right)\] is equivalent to
A
\[( \sim \,p) \wedge ( \sim \,q)\]
B
\[( \sim \,p) \vee q\]
C
\[p \wedge ( \sim \,q)\]
D
\[( \sim \,p) \vee ( \sim \,q)\]
Check answer
Press A-D to select · Enter to check
Solutions · 1
Post your solution
Official solution
q
∨
(
∼
q
∧
p
)
q \vee(\sim q \wedge p)
q
∨
(
∼
q
∧
p
)
⇒
(
q
∨
∼
q
)
∧
(
q
∨
p
)
\Rightarrow(q \vee \sim q) \wedge(q \vee p)
⇒
(
q
∨
∼
q
)
∧
(
q
∨
p
)
⇒
T
∧
(
q
∨
p
)
\Rightarrow T \wedge(q \vee p)
⇒
T
∧
(
q
∨
p
)
⇒
q
∨
p
\Rightarrow q \vee p
⇒
q
∨
p
Now,
∼
(
q
∨
p
)
\sim(q \vee p)
∼
(
q
∨
p
)
=
∼
q
∧
∼
p
=\sim q \wedge \sim p
=∼
q
∧
∼
p
Answer the question to unlock
Previous
Next