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mathmath333

  • one year ago

True or False

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  1. mathmath333
    • one year ago
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    \(\ \{ a \}∈ \{ a, b, c \}\)

  2. anonymous
    • one year ago
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    false

  3. mathmath333
    • one year ago
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    why

  4. anonymous
    • one year ago
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    false, because the set with a is not element of {a,b,c}

  5. anonymous
    • one year ago
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    {{a},b,c} is diferente of {a,b,c}

  6. anonymous
    • one year ago
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    \[\{a\} \in \{\{a\},b,c\}\]

  7. mathmath333
    • one year ago
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    if the question was \(\{a\} \in \{\{a\},b,c\} \) , then ?

  8. anonymous
    • one year ago
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    {a} is a element of { {a} .... } {a} diferent mean of 'a' only the sets {a,b,c} is diferent of {{a},b,c} elements of {a,b,c} are a, b, c elements of {{a},b,c} are {a}, b, c

  9. anonymous
    • one year ago
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    a in {a,b,c}, {a} not in {a,b,c}

  10. mathmath333
    • one year ago
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    this is confusang me

  11. anonymous
    • one year ago
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    this is only definition thinks, and notation a is diferente of set of a \[a \neq \{a\}\]

  12. anonymous
    • one year ago
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    1 pen and a package with one pen have diferent mean

  13. anonymous
    • one year ago
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    a package with a, b, c is { a, b, c } a package with a package with a, b, c is { {a}, b, c}

  14. mathmath333
    • one year ago
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    is my second question true or falswa ?

  15. anonymous
    • one year ago
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    {a}∈{a,b,c} is false, {a} is not element of {a,b,c}

  16. anonymous
    • one year ago
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    if the question was {a}∈{{a},b,c} , is true, because {a} is element of {{a},b,c}

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