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Syllogism Questions [Doubt Cleareance thread]

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Comments

  • edited March 2013
    @vijay_45

    In the last para of what you have written, I was confused with the last statement. When All sticks are Rods then Some Sticks will also be Rods right???

    I second your answer but I doubt it will solve every question of that type.

    It will helpful for us if you can throw some more light on these type of exceptions.
    There is a difference between the statements "Some are ..." and "All are ....".

    In case of "All Sticks are Rods". - There will be no stick which is not rod.

    In case of "Some sticks are Rods": - It means Some sticks are definitely not rods.

    There is a method which is more systematic. It is well explained in TIMES material. I would try to share those pages in evening (after reaching home from office).
    I get bitten by this mosquito doubt every now and then...i finalize it sometimes and then again it comes up....
    can All things are AK_CS and Some things are AK_CS be true at same time?....i think it as Yes if Common Sense but No if strict logic terminology....will someone more logical clarify please?
  • In a village of rampur all inhabitants always answers any qn with two sentences. one of which is always true and other always false.

    While visiting the village, gauri meets 3 inhabitants Rajesh, Mahesh, Rames near the village. One of them is wearing suit. Knowing that they were to resolve a dispute over the ownersip of some land, u ask them "who got the land?". The answer as follows:

    Rajesh: "I got the land. Ramesh is wearing the suit"
    Mahesh" "I am wearing the suit. I got the land"
    Ramesh: "I got the land. I am not wearing the suit"

    Qn.1 Who is wearing the suit?

    Qn.2 Who got the land?

    --------------------------------------------------------------

    I don't know how to approach this question. Pls explain how to approach thse kind of reasoning problems. It ccomes under binary logic section.
  • edited March 2013
    @vijay_45

    In the last para of what you have written, I was confused with the last statement. When All sticks are Rods then Some Sticks will also be Rods right???

    I second your answer but I doubt it will solve every question of that type.

    It will helpful for us if you can throw some more light on these type of exceptions.
    There is a difference between the statements "Some are ..." and "All are ....".

    In case of "All Sticks are Rods". - There will be no stick which is not rod.

    In case of "Some sticks are Rods": - It means Some sticks are definitely not rods.

    There is a method which is more systematic. It is well explained in TIMES material. I would try to share those pages in evening (after reaching home from office).
    I get bitten by this mosquito doubt every now and then...i finalize it sometimes and then again it comes up....
    can All things are AK_CS and Some things are AK_CS be true at same time?....i think it as Yes if Common Sense but No if strict logic terminology....will someone more logical clarify please?
    You are correct to doubt the answer because the reasoning by vijay_45 is wrong. "Some sticks are Rods" DOES NOT imply that some sticks are definitely not rods. We are not allowed to make assumptions on the status of the other sticks. We only need to see if there is always a sub-set of sticks that will overlap with rods in all permutations of the venn diagram, we are not concerned if the other sticks are part of rods or rod.
    Since the question says that some rods are sticks then it quite obviously means that some sticks are rods.

    And to answer your other query, yes All things are AK_CS and Some things are AK_CS are both true at same time, from a common sense and also logical perspective.
  • edited March 2013
    Thanks @Stardust1901. that largely clears the thing. A strict logic requires minimum assumptions.
  • pls tell how to approacch these qns:

    1) qns 5 and 6 http://imageshack.us/a/img201/1233/69160769.png

    2) qns 7 to 10 http://imageshack.us/a/img692/5082/64693242.png

    Ans:

    5)d
    6)c
    7)b
    8)c
    9)c
    10)c
  • @ramithsethi Hi..i solve such questions by hit and trial. let's start with Mahesh. He will be either wearing the suit or has the land. You can blindly tick option for Mahesh for both the questions, if you don't have time to solve. One of the answer will definitely be true.:) Moving ahead, lets assume Mahesh is wearing the suit. so he doesnt have the land. Now go to Rajesh. His second statement will be wrong, since Mahesh is wearing the suit.(as per our assumption). So Rajesh's first statement has to be right. Now go to Ramesh. This guy's first statement will be wrong since Rajesh has the land. Second statement will be right since Mahesh is wearing the suit.

    So, the answer will be Q1) Mahesh Q2) Rajesh


    In a village of rampur all inhabitants always answers any qn with two sentences. one of which is always true and other always false.

    While visiting the village, gauri meets 3 inhabitants Rajesh, Mahesh, Rames near the village. One of them is wearing suit. Knowing that they were to resolve a dispute over the ownersip of some land, u ask them "who got the land?". The answer as follows:

    Rajesh: "I got the land. Ramesh is wearing the suit"
    Mahesh" "I am wearing the suit. I got the land"
    Ramesh: "I got the land. I am not wearing the suit"

    Qn.1 Who is wearing the suit?

    Qn.2 Who got the land?

    --------------------------------------------------------------

    I don't know how to approach this question. Pls explain how to approach thse kind of reasoning problems. It ccomes under binary logic section.
  • @alphaqsecc , @AK_CS , @Stardust1901 , @all
    Sorry for the delay in responding back, (very busy days)
    I am attaching three pages which should help in solving this type of questions in a systematic way. Try to understand it by yourself, i cant explain everything here and also do not want to be blamed about the suitability of the method for CSAT.
  • Hiii Friends and Seniors

    Please help me on the question types below...


    1. the light bulb sprinkles only when paper gets wet
    2. the paper gets wet if pin nails.
    3. if the pin nails the light bulb sprinkles

    Which can be definitely concluded

    1. if the pin nails the paper gets wet
    2. pin nails only if light bulb sprinkles
    3. light bulb sprinkles if pin nails
    4. light bulb sprinkles if paper gets wet


    Please help me solve such types????? [whenever, only if, if, only when, ]
  • @mango_dolly help @xxbee out too. :)
    Please @mango_dolly and all seniors help me out !!!!!!
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