Formal Logic Question , need help Forum

Prepare for the LSAT or discuss it with others in this forum.
Post Reply
integralx2

New
Posts: 43
Joined: Sat Jan 02, 2010 9:58 pm

Formal Logic Question , need help

Post by integralx2 » Wed Aug 10, 2011 9:35 pm

Ok, for example :

All Ts are older then M's
A majority, but not all S's are older than any M's.
All M's are older then any D's

I am struggling on setting up the formal logic for this set of conditions. Can someone explain how to set this up ? And what inferences can be made ?
Last edited by integralx2 on Wed Aug 10, 2011 9:48 pm, edited 1 time in total.

User avatar
EarlCat

Silver
Posts: 606
Joined: Mon Mar 12, 2007 4:04 pm

Re: Formal Logic Question , need help

Post by EarlCat » Wed Aug 10, 2011 9:43 pm

integralx2 wrote:Ok, for example :

All Ts are older then M's
A majority, but not all S's are older than any M's.
All G are older then any D's

I am struggling on setting up the formal logic for this set of conditions. Can someone explain how to set this up ? And what inferences can be made ?
Not much to infer, really. You know some (maybe all) Ss are younger than Ts. You have no idea the relationship between Ts, Ms, or Ss to Gs or Ds. You also have no idea if any Ss are older than Ts or if any Ss are younger than Ms.

integralx2

New
Posts: 43
Joined: Sat Jan 02, 2010 9:58 pm

Re: Formal Logic Question , need help

Post by integralx2 » Wed Aug 10, 2011 9:48 pm

EarlCat wrote:
integralx2 wrote:Ok, for example :

All Ts are older then M's
A majority, but not all S's are older than any M's.
All G are older then any D's

I am struggling on setting up the formal logic for this set of conditions. Can someone explain how to set this up ? And what inferences can be made ?
Not much to infer, really. You know some (maybe all) Ss are younger than Ts. You have no idea the relationship between Ts, Ms, or Ss to Gs or Ds. You also have no idea if any Ss are older than Ts or if any Ss are younger than Ms.
I made a mistake. I meant to say M, but wrote G for the 3rd line.

User avatar
EarlCat

Silver
Posts: 606
Joined: Mon Mar 12, 2007 4:04 pm

Re: Formal Logic Question , need help

Post by EarlCat » Thu Aug 11, 2011 2:57 am

My head asplode.

User avatar
Blessedassurance

Gold
Posts: 2091
Joined: Mon Jun 27, 2011 3:42 pm

Re: Formal Logic Question , need help

Post by Blessedassurance » Thu Aug 11, 2011 3:30 am

integralx2 wrote:Ok, for example :

All Ts are older then M's
A majority, but not all S's are older than any M's.
All M's are older then any D's

I am struggling on setting up the formal logic for this set of conditions. Can someone explain how to set this up ? And what inferences can be made ?
Inferences:

All T's are older than D's

A majority but not all S's are older than any D's.

If a member of S is Older than M, that member is also older than D

If a member of S is not older than M, that member is younger than T

Want to continue reading?

Register now to search topics and post comments!

Absolutely FREE!


Post Reply

Return to “LSAT Prep and Discussion Forum”