Logical Operators − Implication (Part 3)

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Discrete Mathematics: Logical Operators − Implication (Part 3)
Topics discussed:
1. Meaning of necessary condition.
2. Meaning of sufficient condition.
3. Why p is sufficient for q?
4. Why q is necessary for p?
5. Why p is not necessary for q?
6. Why q is not sufficient for p?

Music:
Axol x Alex Skrindo - You [NCS Release]

#DiscreteMathematicsByNeso #DiscreteMaths #LogicalOperators

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These videos teach me the real meaning of the learning is not required anymore....Hats

hrishikeshpable

this is bit confusing though, the falsity and the truth of p and q, u should clear in a better way though

khanaleena

to sum up:
- "q is necessary for p"
if p is true then q is true.
if q is false then p is false.
- "p is sufficient for q"
if p is true then q is true.
- "q unless not p" is equivalent to q if p (if p then q)

marah

Was a bit tricky to understand, but writing truth table helped

swaminathbera

Mattha kharaab ho gya hai mera, SIR ME DARD HO RHA HAI !!!

pinin

Why to represent using multiple english statements...just use p implies q...

thirumeniparthiban

Where was the example for q unless 7p ??

HamzaShahzadEB_

It’s kind of strange how “fragile” and “abstract” those logical statements appear, when it comes to representation with English words. The truth table is a solid base, that’s hard to argue with. But talking about “necessary, sufficient, only if” with those arguable examples is indeed hard ( since we construct proofs out of nowhere, like “Good food is necessary for being alive”, “but some friend died, even though he hasn’t had shortage of good food” and that’s how we derived our values for truth table?) 😅

missmulled-wine

Luv u neso academy... Sir may I know what subject next u r gonna teach for electronics... thank u sir...

sivasankari

I still don't understand q unless not p.... Even if p is false q can still be true, so what does this statement mean?

odgarig

is it possible that p is necesary and suffictiont both

AliSher-qz

wow! what a sad story! sorry about you frined dear Neso😥😥

dormammusdad

for A is necessary for B does B's truth guarantee A's truth?

catdog

Conclusion Q should need to be true if the P is true

zainwasem

sir can u provide notes of this chapter

sahilgeyiefbskxn

can somebody explain the first statement for me please

hamzahbhaiyat

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