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Byju's Answer
Standard XII
Mathematics
Definition of Sets
The equivalen...
Question
The equivalent statement of (p
↔
q) is
A
(
p
∧
q
)
∨
(
p
∨
q
)
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B
(
p
→
q
)
∨
(
q
→
p
)
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C
(
∼
p
∨
q
)
∨
(
p
∨
∼
q
)
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D
(
∼
p
∨
q
)
∧
(
p
∨
∼
q
)
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Solution
The correct option is
D
(
∼
p
∨
q
)
∧
(
p
∨
∼
q
)
p
→
q
≡
(
∼
p
∨
q
)
q
→
p
≡
(
∼
q
∨
p
)
∴
p
↔
q
≡
(
p
→
q
)
∧
(
q
→
p
)
⇒
p
↔
q
≡
(
∼
p
∨
q
)
∧
(
p
∨
∼
q
)
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0
Similar questions
Q.
The statement
p
→
(
q
→
p
)
is logically equivalent to
Q.
statement patterns
(i)
[
(
p
→
q
)
∧
q
]
→
p
(ii)
(
p
∧
q
)
→
∼
p
(iii)
(
p
→
q
)
↔
(
∼
p
∨
q
)
(iv)
(
p
↔
r
)
∧
(
q
↔
p
)
Q.
Assertion :
∼
(
p
↔
q
)
≡
(
p
∧
q
)
∨
(
∼
p
∧
q
)
Reason:
p
↔
q
≡
(
p
↔
q
)
∨
(
q
←
p
)
Q.
Statement 1:
∼
(
p
↔
∼
q
)
is equivalent to
p
↔
q
Statement 2
:
∼
(
p
↔
∼
q
)
is a tautology
Q.
Prepare truth table of the following statement patterns.
(i)
∼
p
→
(
q
↔
p
)
(ii)
(
q
↔
p
)
∨
(
∼
p
↔
q
)
(iii)
p
↔
[
∼
(
q
∨
r
)
]
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