saifoo.khan
  • saifoo.khan
Sets question.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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saifoo.khan
  • saifoo.khan
1 Attachment
mathslover
  • mathslover
Try to draw a venn diagram first
mathslover
  • mathslover
Can you do that Saif ?

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mathslover
  • mathslover
|dw:1365077901699:dw|
saifoo.khan
  • saifoo.khan
I have already drawn it. Still unable to do it. :s
mathslover
  • mathslover
No problem. You would do it now.
saifoo.khan
  • saifoo.khan
Only once you help me then i'll be able to do it.
mathslover
  • mathslover
It is given that 12 members are of athletics and drama both . |dw:1365078073152:dw|
saifoo.khan
  • saifoo.khan
|dw:1365078114787:dw|Now tell me that to do?!
saifoo.khan
  • saifoo.khan
what*
mathslover
  • mathslover
Check that again! I think there is some fault.
saifoo.khan
  • saifoo.khan
Where? In the question?
mathslover
  • mathslover
In the diagram. Drama and athletics = 12 members. and Drama and basket =19 . Have you reversed them?
saifoo.khan
  • saifoo.khan
Nope.
mathslover
  • mathslover
You have marked drama and athletics as 19 members, right?
saifoo.khan
  • saifoo.khan
No idea. :S @Mimi_x3
mathslover
  • mathslover
can't say mimi ... as I prefer to solve these type of questions by venn diagrams. It makes understanding better.
mathslover
  • mathslover
|dw:1365078569066:dw|
saifoo.khan
  • saifoo.khan
Ohh. I wrote it wrong here. On the paper it's in the right order.
amistre64
  • amistre64
you should start in the middle and work your way outwards
mathslover
  • mathslover
Yes thought the same Saif.
saifoo.khan
  • saifoo.khan
|dw:1365078648571:dw|
saifoo.khan
  • saifoo.khan
How? @amistre64
amistre64
  • amistre64
12 students total are in BOTH A and D, we already know 5 of them, whats left? 12 - 5 = ?
mathslover
  • mathslover
Now we will exclude the all three three club members from the common areas .
mathslover
  • mathslover
Yep the one amistre suggested.
amistre64
  • amistre64
we know 13 total are in BOTH, B and A. and we already know of 5 of them, 13 - 5 = ?
saifoo.khan
  • saifoo.khan
Sorry. Don't get it. :/ @amistre64
saifoo.khan
  • saifoo.khan
How we already know 5 of them?
mathslover
  • mathslover
|dw:1365078755446:dw| the boundary I drew has 12 members. Right?
saifoo.khan
  • saifoo.khan
right
amistre64
  • amistre64
|dw:1365078760078:dw|
mathslover
  • mathslover
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?
amistre64
  • amistre64
|dw:1365078840934:dw|
amistre64
  • amistre64
|dw:1365078870777:dw|
mathslover
  • mathslover
Now we have the intersection of athletics and drama as : 5 + something = 12 .. getting it?
saifoo.khan
  • saifoo.khan
http://i3.kym-cdn.com/entries/icons/original/000/009/993/tumblr_m0wb2xz9Yh1r08e3p.jpg
saifoo.khan
  • saifoo.khan
I totally get that subtraction thing. Whats next?
mathslover
  • mathslover
Good.
amistre64
  • amistre64
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
mathslover
  • mathslover
May I interupt with a diagram ?
amistre64
  • amistre64
|dw:1365079086252:dw|
mathslover
  • mathslover
|dw:1365079147638:dw|
amistre64
  • amistre64
|dw:1365079189518:dw|
saifoo.khan
  • saifoo.khan
Nice work @amistre64 and @mathslover . Leave rest of me. Thanks a lot. (:
mathslover
  • mathslover
I would stop myself now. Amistre, continue.
amistre64
  • amistre64
good luck ;)
mathslover
  • mathslover
You're welcome!
saifoo.khan
  • saifoo.khan
Thank you!
mathslover
  • mathslover
@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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