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jollysailorbold

  • 2 years ago

If set D is a subset of set E, then which of the following is true? -D ∩ E = D -D ∩ E = E -D ∩ E = Ø would it be the first one D ∩ E = D?

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  1. ReallyPrettyBoyPlaybo
    • 2 years ago
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    B

  2. jollysailorbold
    • 2 years ago
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    could you explain it? (my lesson didn't explain it well)

  3. ReallyPrettyBoyPlaybo
    • 2 years ago
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    just google it the answer is most likely B

  4. ReallyPrettyBoyPlaybo
    • 2 years ago
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    one sec

  5. jollysailorbold
    • 2 years ago
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    i would've googled it anyways, but there are no good explanations.

  6. hartnn
    • 2 years ago
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    do you know what a subset is ?

  7. jollysailorbold
    • 2 years ago
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    slightly.

  8. ReallyPrettyBoyPlaybo
    • 2 years ago
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    wait its A!!!! JUST GOOGLE IT RIGHT NOW LOL

  9. ReallyPrettyBoyPlaybo
    • 2 years ago
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    woohoOO :D

  10. jollysailorbold
    • 2 years ago
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    reallyprettyboy, i don't think you understand. i want and explanation. :|

  11. ReallyPrettyBoyPlaybo
    • 2 years ago
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    oh ok i'll find one dont worry :)

  12. hartnn
    • 2 years ago
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    if A is the subset of B, then all elements of A are present in B ex : A={1,2} B={1,2,3,4} notice all elements of A are in B ok ?

  13. chihiroasleaf
    • 2 years ago
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    |dw:1358421673278:dw|

  14. jollysailorbold
    • 2 years ago
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    ah, okay.

  15. hartnn
    • 2 years ago
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    so, if now you have to find the intersection (common elements) the it would be entire set A, right ?

  16. hartnn
    • 2 years ago
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    similarly, since D is a subset, intersection is set D itself.

  17. jollysailorbold
    • 2 years ago
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    oh okay:) so it is D ∩ E = D.

  18. chihiroasleaf
    • 2 years ago
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    yup.... :)

  19. hartnn
    • 2 years ago
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    yes! :)

  20. jollysailorbold
    • 2 years ago
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    yay, thank you two:)

  21. hartnn
    • 2 years ago
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    welcome ^_^

  22. chihiroasleaf
    • 2 years ago
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    you're very welcome... :D

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