Shortcut to solve syllogism by rules
Day 3: Actual Rules Syllogism
Rule Table: Learn it so that next time you don’t have to refer this table
S.No
First Proposition
Second Proposition
Conclusion
1
ALL
ALL
ALL
2
ALL
NO
NO
3
ALL
SOME
NO CONLCUSION*
4
SOME
ALL
SOME
5
SOME
NO
SOME NOT
6
SOME
SOME
NO CONCLUSION*
7
NO
ALL
SOME NOT REVERSED
8
NO
SOME
SOME NOT REVERSED
9
NO
NO
NO CONCLUSION*
10
Some Not
Anything(Some/No/All/Some Not)
NO CONLCUSION*
*No Conclusion= Any Possibility is True
Note that we will have to use the concept of Rearrangement and Reversal that we have learned on Day 1 and Day 2 to solve Syllogism by rules.
Examples
1) All+All=All
All Red are Green + All Green are Blue. => Conclusion= All Red is Blue
Note: The reverse of the obtained conclusion i.e Reverse of All Red is Blue = Some Blue is Red will also be true.
2) All + No= No
All Red is green + No Green is Blue => Conclusion= No Red is blue.
Reverse conclusion= No Blue is Red
3) All+Some=No Conclusion
All Red is Green + Some Green is Blue => Conclusion= No conclusion can be drawn between Red And Blue. (But No conclusion means that any possibility between Red and Blue will be true)
Example: All Red being blue is a possibility.
Some Red are blue is a possibility
Some red are not blue is a possibility
No red is blue is a possibility.
All these possibility are true.
4) Some + All= Some
Some Red is green + All green is blue. => Conclusion= Some Red is blue.
Reverse conclusion=some blue is red.
5) Some + No = Some Not
Some Red is green + No green is blue=> Conclusion= Some Red is Not Blue
6) Some + Some= No Conclusion
Some Red is Green + Some Green is blue. => Conclusion= No Conclusion = Any possibility between Red and Blue is true (Same as in (3))
7) No + All = Some Not Reversed
No Red is Green + All Green is blue => (Apply Some Not on Reversed entity. i.e reverse Red and blue)
Means First Blue then Red at last and put Some Not
=> Conclusion= Some Blue are Not Red
8) No + Some = Some Not Reversed
No Red is Green + Some Green is blue => Conclusion= Some Blue is not Red
9) No + No = No
No Red is Green + No Green is blue => No Conclusion.
Exercise for the Day
Solve only by rules. Don’t use venn diagram.
- Statement:
(a) Some A are B
(b) All A are C
Conclusion:
(i) Some B are C
(ii) Some C are A
(iii) Some B are A
A) Only (i)
B) Only (ii)
C) Both (i) and (ii)
D) Both (ii) and (iii)
E) All
- Statement:
(a) No pink is white
(b) All white is red
Conclusion:
(i) Some red are not pink
(ii) Some pink are not red
A) Only (i)
B) Only (ii)
C) Either
D) Both
E) Neither
- Statement:
(a) All A are B.
(b) Some C are B
Conclusion:
(i) All A are C
(ii) Some A are C
(iii) All A are C is a possibility
A) Only (i)
B) Only (ii)
C) Only (iii)
D) None follows
- Statement:
(a)Some Samsung are Phone
(b) No Samsung is Vivo.
Conclusion:
(i) Some Vivo are not phone
(ii) Some Phone are not Vivo
(iii) No Vivo is samsung
A) (i) and (iii)
B) (iii)
C) (ii) and (iii)
D) (ii)
E) All
- Statement:
(a) Some A are B
(b) Some B are C
Conclusion:
(i) Some A are C
(ii) No A is C is a possiblity
(iii) Some C are B
A) Only (ii)
B) Only (iii)
C) Only (i)
D) None
E) Both (ii) and (iii)
Topic for Day 4: Use of rules to solve more than 2 statements simultaneously.
Ask your doubt in comment section.
Thank You!!!!!
thyanku sir
10x??
???
Yad kese hoga ye table ? 🙁
yaad karna padega,, roz roz yaad karo 1 week.. ho jayega
Sir practice questions provide kr dijiye
ok,, abhi 2 minute me upar yehi post krta hu
Ok ty
Venn se aata hai to waise bhi kr sakte
Wo to aata hi hai..bt i want to learn this new one..then i ll compare
ha kar sakte hai,, baat sirf time ki hai,, ek baar ye method aa jaye to 1/3 time lagega uska
Some not wala ques deta Hu ek. Some not wale nhi aate
Tell which conclusion follows in these 10 questions:
1) Statements:
Some A are B
All B are C
Conclusion:
I. Some A are C
II. Some C are A
2) Statements:
All Red are Blue
No Blue is Pink
Conclusion:
I. No red is Pink
II. Some Pink is blue
3) Statements:
Some banana is guava
No guava is grapes
Conclusion:
I. Some banana are not grapes
II. Some grapes are not banana
4) Statements:
No mobile is Phone
Some Phone are Vivo
Conclusion:
I. Some Vivo are not mobile
II. No phone is Mobile
5) Statements:
No A is B
All B is Z
Conclusion:
I. Some Z is A
II. Some Z is not A
6) Statements:
Some mouse is rat
Some rat is cat
Conclusion:
I. Some cat is mouse is a possibility
II. Some cat is not mouse is a possibility
7) Statements:
All A is B
Some B is C
Conclusion:
I. Some A is C
II. No A is C is a possibility
8) Statements:
No time is watch
No watch is clock
Conclusion:
I. No time is clock
II. No clock is watch
9) Statements:
All time is clock
All clock is watch
Conclusion:
I. All time is watch
II. Some watch is time
10) Statements:
All B is C
Some A is B
Conclusion:
I. Some A is C
II. All A are C
1–both
1–both
2–1
right
3–1
4–1
3 is correct
and for 4) both are correct because see the second conclusion is the reverse of 1st statement.. so it is also a conc.
5–2
6– both
right
7–2
8–none
7) correct
8) only II.. again reverse wala concept
9–both
10–none
9) both
10) ques me misprint hai…will edit it
10 me I follow krega
10 – only 1
9- both
8- only 2
7-only 2
6-both
5-only 2
4-both
3-only1
2-only1
1-both
1 both
1- neither
2 only first
3 first only
4 first only
5 second only
6 both
7 second only
8 second only
9 both
10 first only
1) Both I and II
2) Answer: Only I
3) Answer: Only I
4) Answer: Both I and II
5) Answer: Only II
6) Answer: Both
7) Answer: Only II
8) Answer: Only II
9) Answer: Both
10) Answer: Only I
sir in ques no.9 jaise apan ques 1 me conclusion k baad agr conclusion k reserve bnta h to wo true kr rhe h to 9th ques me b agr “some time is watch” hota to crct hota?
i mean to say some time is watch ek aur additional conclusion hota tb
yes yes, wo bhi true hota
3 Ka second correct
https://uploads.disquscdn.com/images/ed0a1915a2c69dad6d524f732a6622bb253f20a7197fc1a2c9624aee1eff78bd.png
Some not wale btao
jin do entoty k bech relation nikalna hai unko arrange karo pehle FIRST LAST RULE k babis pe, jo ki first two day sikhaya gaya hai,, then using todays rule find the relation.
for example to check conclusion C) i.e between pen and paper. we need 3rd and 4th statement
i.e .all pen are pencil .no pencil is paper
All +No= no
=> no pen is paper
=> some pen is not paper is also true
Some pen is not paper possiblty
nhi True conclusion k aage possibilty lag jaye to wo false hoga..
so Some pen is not paper possiblty is false
Sir first option dekho—
Book n pencil me relation diya hai..question se 1 n 3 statement use krke some book is pencil aara hai bt answer me mark ni hai kyu?
Because Wrng find krna hai
To instruction post kyu ni kiya u ne?
aagya na?
Kaun sa quiz kra rha. Only prob puchni thi bus
Yup
Kha hai new post
isse post me hai some not ka case.. puri post padho..
Niche check my ques
Laxmi Vilas bank pvt ya govt
@sir question 4 jo aapne abi post kiye hai–
No+some–some not reverse
1 option correct
N some not ka reverse ni hota to answer should b 1st only na?
U r sayin both how?
Dono hai. No mobile is phone also true
Yup got ty
No mobile is Phone
Some Phone are Vivo
Conclusion:
I. Some Vivo are not mobile
II. No phone is Mobile
I. is true by ur logic
II. is true by reverse of :No mobile is Phone
No A is B=> reverse => NO B is A
No mobile is phone=> no phone is mobile
Oks..statement individual ka reverse hai..nw got it
yes ye,, us reverse ka ye bhi use hai.. coz agar dhyan se dekho to ye FIRST and LAST RULE ka hi part hi,, jinke bech me relation dekhna hai,, usme se ek first hona chahye ek last,, to ye ek hi sentence k first and last me hai.. to reverse wala concept aise case me dekha karo
Yup
ok if u have any other doubt post it,, i will tell it tomorrow
Got sir.thnku..no further doubts..good night
(a) No pink is white
(b) All white is red
Conclusion:
(i) Some red are not pink
(ii) Some pink are not red
A) Only (i)
B) Only (ii)
C) Either
D) Both
E) Neither
sir isme 2 q nahi follow krta plzz explain
Statements are: No pink is white+ All white is red
it is in the form No+All = SOme not reverse
yani ki jo last me term hai usko pehle likho i.e Red aur jo pehle hai usse last me likho means pink and add SOme not
so it becomes
Some red are not pink
Yes cleared doubt thanx a lot sir 🙂
@surajsir
@surajskt:disqus sir
If possibility case reverse me ho tb b follow krega na as in example 3 reverse ho red and blue to like
All blue being red is possibility
Some blue are red is possibility
Some blue are not red is possibility
No blue is red is possibility
#ye sb true hoga na conclusion me?
Yes this is same as rule no 6 if we apply reverse logic , thanx a lot @suraj sir
thanks az
Sir agar all/some/no + some not aa jaye to conclusion kya hoga?
No conclusion hoga.. there are only two sepcial case with some not + all jisme conclusion niklega,, u can check them here : http://aspirantszone.com/solve-new-pattern-syllogism-using-shortcut/
can you or @Shubhra_AspirantsZone:disqus mam please help in understanding critical reasoning rules / concept. mostly i get confuse in 2 options and choose the wrong one. please help if possible
Sir i have a major dbt
Statements : All leaves are roots. Some leaves are branches.
Conclusions : I. Some branches are not leaves.
II. Atleast some roots are branches.
How to slove this ??
The ans is only 2 follows
conclusion one doesn’t follow as per rule some A is B can be written as some B is A here conclusion some branches are not leaves this cant be converted
if it is possibility then ok if not then it doesn’t follow
2 conclusions follows – write some branches are leaves and all leaves are roots – cut the leaves then it will be some + all = some so some branches are roots
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