636 Views

if p tends(~p^~q) is false,then the truth value of p and q are respectively:


kallamvgreddy123 14th Mar, 2020
Answers (2)
Nikhitha Sai 14th Mar, 2020

Hello. So this is considered as,

"p implies negation p and negation q " should be false  precisely p=> (~p^~q) =false

First rule of implication, a true statement cannot imply a false statement. If this is the case end result is false. So lhs value should be true that is p value should be true and entire rhs value is false

so p values is true

Coming to rhs , it should be false.

Since p value is true, negation p is false. (False ^~q) Is false

Rule of and implies, if both are false then end result is false or both are true end result is true.

Here we need to take first case since we need end result as false.

So ~q should be false. There by q value is true

q value is true

wo values of p and q are true, true


Smrity 14th Mar, 2020

Hello,

since we know that:

p->(~p^~q) is false

the truth table is as follows:

p              q                  p ^q                       ~(p^q)              p->n(p^q)

T               T                     T                             F                      F

T                F                     F                            T                      T

F                 T                     F                             T                     T

F                 F                     F                             T                      T

SO  both p and q are True that is the the truth value of p and q are T.

I hope this helps.

All the best!

3 Comments
Comments (3)
14th Mar, 2020
by seeing what?we can say that both values are true
Reply
14th Mar, 2020
kallamvgreddy123 If You see the first condition of the truth table you can see that the value of teh given condition is false only in one case when p and q both are true. thus, the values are true.
Reply
15th Mar, 2020
Smrity thankyou for your answer.
Reply

Related Questions

Amity University, Noida Law A...
Apply
700+ Campus placements at top national and global law firms, corporates, and judiciaries
UPES Integrated LLB Admission...
Apply
Ranked #28 amongst Institutions in India by NIRF | Ranked #1 in India for Academic Reputation by QS University Rankings | 16.6 LPA Highest CTC
Great Lakes PGPM & PGDM 2025
Apply
Admissions Open | Globally Recognized by AACSB (US) & AMBA (UK) | 17.3 LPA Avg. CTC for PGPM 2024 | Extended Application Deadline: 10th Jan 2024
Amity University Noida B.Tech...
Apply
Among Top 30 National Universities for Engineering (NIRF 2024)
ISBR Business School PGDM Adm...
Apply
250+ Companies | Highest CTC 16 LPA | Average CTC 8 LPA | Ranked as Platinum Institute by AICTE for 6 years in a row | Awarded Best Business School...
Chandigarh University Admissi...
Apply
Ranked #1 Among all Private Indian Universities in QS Asia Rankings 2025 | Scholarships worth 210 CR
View All Application Forms

Download the Careers360 App on your Android phone

Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile

150M+ Students
30,000+ Colleges
500+ Exams
1500+ E-books