On 16-19th April 2012, this was my last final exam (UN) in SMA. And that time, the subjects which are tested were bahasa, math, physics, chemistry, biology, and english. but from that six subjects, I  still remember some math problem in UN. that is mathematical logic, and I give it to you expecially for student, i hope this problem can help you for pass UN


1. Question:
    if my mother goes, then my sister is happy
    if my sister is happy, then my sister plays with her friends
    the conclusion is....

Answer
p : my mother goes
q: my sister is happy
r : my sister plays with her friends

 and then, we can write

      p-->q
      q-->r
  :: p-->r

we can conclude that "p-->r" or we can write in verbal statement "if my mother goes, then my sister plays with her friends"


2. Question
    Negative from "some of poeple are foolish, if they are lazy, then they have a bad occupation" is

   Answer
(Ex)     : some of people are foolish
P(x)  : they are lazy
        Q(x)  : they have a bad occupation


we can write that 


        (Ex)(P(x)-->Q(x))


and then

       -[(Ex)(P(x)-->Q(x))]
          (Ax)-(-P(x) v Q(x))

or we can write in verbal "all of people aren't foolish, they are lazy, and they don't have bad occupation"

On 16-19th April 2012, this was my last final exam (UN) in SMA. And that time, the subjects which are tested were bahasa, math, physics, chemistry, biology, and english. but from that six subjects, I  still remember some math problem in UN. that is mathematical logic, and I give it to you expecially for student, i hope this problem can help you for pass UN


1. Question:
    if my mother goes, then my sister is happy
    if my sister is happy, then my sister plays with her friends
    the conclusion is....

Answer
p : my mother goes
q: my sister is happy
r : my sister plays with her friends

 and then, we can write

      p-->q
      q-->r
  :: p-->r

we can conclude that "p-->r" or we can write in verbal statement "if my mother goes, then my sister plays with her friends"


2. Question
    Negative from "some of poeple are foolish, if they are lazy, then they have a bad occupation" is

   Answer
(Ex)     : some of people are foolish
P(x)  : they are lazy
        Q(x)  : they have a bad occupation


we can write that 


        (Ex)(P(x)-->Q(x))


and then

       -[(Ex)(P(x)-->Q(x))]
          (Ax)-(-P(x) v Q(x))

or we can write in verbal "all of people aren't foolish, they are lazy, and they don't have bad occupation"