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Math Help - I just need confirmation for my quiz test today

  1. #1
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    I just need confirmation for my quiz test today

    I just had a quiz today on quantifiers, and the question asks me to represent the statement :

    all blue shirts are expensive

    using logical quantifier, the domain x is all shirts

    and I answered:

    Q(x) : Shirt color x is expensive.

    \left( {\forall x} \right) [[Q(Blue)]

    Is this right?
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  2. #2
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    B(x) is x is blue.
    Q(x) is x is expensive.

    “All P is Q” is positive universal statement: P \Rightarrow Q.
    If the shirt is blue then it is expensive.
    All blue shirts are expensive:
    \left( {\forall x} \right)\left[ {B(x) \Rightarrow Q(x)} \right]
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