Results 1 to 2 of 2

Math Help - discrete maths

  1. #1
    Newbie
    Joined
    Feb 2009
    Posts
    5

    Wink discrete maths

    help !

    Decide which of the following sentences are propositions: (6 2 Marks)
    a) Fish can swim.
    b) I will be there in three days time.
    c) Please, will you shut up?
    d) Its 3:30pm.
    e) I declare you married.
    f) Its about time you started question 2.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Grandad's Avatar
    Joined
    Dec 2008
    From
    South Coast of England
    Posts
    2,570

    Propositions

    Hello sabina_19
    Quote Originally Posted by sabina_19 View Post
    help !

    Decide which of the following sentences are propositions: (6 2 Marks)
    a) Fish can swim.
    b) I will be there in three days time.
    c) Please, will you shut up?
    d) Its 3:30pm.
    e) I declare you married.
    f) Its about time you started question 2.
    A proposition is a statement that has a truth value - it's either true or false. (But note that you don't necessarily have to know what that value is.)

    So (a) is a proposition. It doesn't matter whether or not fish can swim; the fact is that this statement may be true or false.

    (b) is a proposition. We don't know whether or not it is true, but the fact is that either you will be there in three days time, or you won't.

    (c) is not a proposition. It's not making a true-or-false statement.

    (d) is a proposition. It's either 3.30 pm or it isn't.

    (e) is not a proposition. Don't confuse this with the statement 'You are married' which is either true or false.

    (f) is either true or false. So it is a proposition.

    Grandad
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. discrete maths
    Posted in the Discrete Math Forum
    Replies: 2
    Last Post: November 21st 2009, 07:44 AM
  2. Discrete set maths
    Posted in the Discrete Math Forum
    Replies: 6
    Last Post: August 27th 2009, 12:40 AM
  3. help me in discrete maths
    Posted in the Discrete Math Forum
    Replies: 2
    Last Post: December 14th 2008, 06:50 AM
  4. Discrete maths
    Posted in the Discrete Math Forum
    Replies: 8
    Last Post: August 11th 2006, 08:19 AM
  5. Discrete Maths
    Posted in the Discrete Math Forum
    Replies: 1
    Last Post: May 21st 2006, 03:14 AM

Search Tags


/mathhelpforum @mathhelpforum