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saifoo.khan

  • 3 years ago

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  1. saifoo.khan
    • 3 years ago
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  2. mathslover
    • 3 years ago
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    Try to draw a venn diagram first

  3. mathslover
    • 3 years ago
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    Can you do that Saif ?

  4. mathslover
    • 3 years ago
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    |dw:1365077901699:dw|

  5. saifoo.khan
    • 3 years ago
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    I have already drawn it. Still unable to do it. :s

  6. mathslover
    • 3 years ago
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    No problem. You would do it now.

  7. saifoo.khan
    • 3 years ago
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    Only once you help me then i'll be able to do it.

  8. mathslover
    • 3 years ago
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    It is given that 12 members are of athletics and drama both . |dw:1365078073152:dw|

  9. saifoo.khan
    • 3 years ago
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    |dw:1365078114787:dw|Now tell me that to do?!

  10. saifoo.khan
    • 3 years ago
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    what*

  11. mathslover
    • 3 years ago
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    Check that again! I think there is some fault.

  12. saifoo.khan
    • 3 years ago
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    Where? In the question?

  13. mathslover
    • 3 years ago
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    In the diagram. Drama and athletics = 12 members. and Drama and basket =19 . Have you reversed them?

  14. saifoo.khan
    • 3 years ago
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    Nope.

  15. mathslover
    • 3 years ago
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    You have marked drama and athletics as 19 members, right?

  16. saifoo.khan
    • 3 years ago
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    No idea. :S @Mimi_x3

  17. mathslover
    • 3 years ago
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    can't say mimi ... as I prefer to solve these type of questions by venn diagrams. It makes understanding better.

  18. mathslover
    • 3 years ago
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    |dw:1365078569066:dw|

  19. saifoo.khan
    • 3 years ago
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    Ohh. I wrote it wrong here. On the paper it's in the right order.

  20. amistre64
    • 3 years ago
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    you should start in the middle and work your way outwards

  21. mathslover
    • 3 years ago
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    Yes thought the same Saif.

  22. saifoo.khan
    • 3 years ago
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    |dw:1365078648571:dw|

  23. saifoo.khan
    • 3 years ago
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    How? @amistre64

  24. amistre64
    • 3 years ago
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    12 students total are in BOTH A and D, we already know 5 of them, whats left? 12 - 5 = ?

  25. mathslover
    • 3 years ago
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    Now we will exclude the all three three club members from the common areas .

  26. mathslover
    • 3 years ago
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    Yep the one amistre suggested.

  27. amistre64
    • 3 years ago
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    we know 13 total are in BOTH, B and A. and we already know of 5 of them, 13 - 5 = ?

  28. saifoo.khan
    • 3 years ago
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    Sorry. Don't get it. :/ @amistre64

  29. saifoo.khan
    • 3 years ago
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    How we already know 5 of them?

  30. mathslover
    • 3 years ago
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    |dw:1365078755446:dw| the boundary I drew has 12 members. Right?

  31. saifoo.khan
    • 3 years ago
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    right

  32. amistre64
    • 3 years ago
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    |dw:1365078760078:dw|

  33. mathslover
    • 3 years ago
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    Saif, we know that there are 5 members in common with all the three clubs. teenon club mein 5 members to common hain hi ? right?

  34. amistre64
    • 3 years ago
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    |dw:1365078840934:dw|

  35. amistre64
    • 3 years ago
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    |dw:1365078870777:dw|

  36. mathslover
    • 3 years ago
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    Now we have the intersection of athletics and drama as : 5 + something = 12 .. getting it?

  37. saifoo.khan
    • 3 years ago
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    http://i3.kym-cdn.com/entries/icons/original/000/009/993/tumblr_m0wb2xz9Yh1r08e3p.jpg

  38. saifoo.khan
    • 3 years ago
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    I totally get that subtraction thing. Whats next?

  39. mathslover
    • 3 years ago
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    Good.

  40. amistre64
    • 3 years ago
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    you are given the top level values, the venn has 4 sections for each top level, 3 of which are known. keep working the solution in the same manner

  41. mathslover
    • 3 years ago
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    May I interupt with a diagram ?

  42. amistre64
    • 3 years ago
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    |dw:1365079086252:dw|

  43. mathslover
    • 3 years ago
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    |dw:1365079147638:dw|

  44. amistre64
    • 3 years ago
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    |dw:1365079189518:dw|

  45. saifoo.khan
    • 3 years ago
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    Nice work @amistre64 and @mathslover . Leave rest of me. Thanks a lot. (:

  46. mathslover
    • 3 years ago
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    I would stop myself now. Amistre, continue.

  47. amistre64
    • 3 years ago
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    good luck ;)

  48. mathslover
    • 3 years ago
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    You're welcome!

  49. saifoo.khan
    • 3 years ago
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    Thank you!

  50. mathslover
    • 3 years ago
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    @saifoo.khan , there is a better explanation there : http://www.mathsisfun.com/sets/venn-diagrams.html . Just have a look there.

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