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a school has 63 students studying A,B and C. 33 study A, 25 study B, 26 study C. 10 study A and B, 9 study B and C while 8 study both A and C. Equal num study all three subjects as those who learn none of the three. How many study all 3 subjects?
#help me solve this question#
 one year ago
 one year ago
a school has 63 students studying A,B and C. 33 study A, 25 study B, 26 study C. 10 study A and B, 9 study B and C while 8 study both A and C. Equal num study all three subjects as those who learn none of the three. How many study all 3 subjects? #help me solve this question#
 one year ago
 one year ago

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Aditi_SinghBest ResponseYou've already chosen the best response.2
dw:1356287630536:dw a+b+d+e = 33 b+e+f+c = 25 d+e+f+g = 26 b+e = 10 f+e = 9 d+e = 8 e = 63  (a+b+c+d) Solve for e..
 one year ago

sha0403Best ResponseYou've already chosen the best response.0
where do you get e=63(a+b+c+d)?
 one year ago

Aditi_SinghBest ResponseYou've already chosen the best response.2
It is given that  Equal num study all three subjects as those who learn none of the three. The people who do not study any of them are given by U  (A U B) Here, U = 63 .. And, A U B is given be (a+b+c+d+e) and, I considered the people who study all the three as 'e' And, Sorry, I did a mistake .. I would be > e = 63  (a+b+c+d+e)
 one year ago

sha0403Best ResponseYou've already chosen the best response.0
why u no include f in e=63(a+b+c+d+e)? can u explain me? i still not understand....
 one year ago

hartnnBest ResponseYou've already chosen the best response.3
those who learn none of the three subject > 63(a+b+c+d+e+f+g)
 one year ago

sha0403Best ResponseYou've already chosen the best response.0
i don't know but the answer is 3..
 one year ago

Aditi_SinghBest ResponseYou've already chosen the best response.2
pellet! :P I'm extremely sorry again! :P yeah, you are absolutely correct!  it ought to be 63  (a+b+c+d+e+f+g)
 one year ago

hartnnBest ResponseYou've already chosen the best response.3
those who learn none of the three subject = total students  students learning atleast 1 subject, got this ?
 one year ago

hartnnBest ResponseYou've already chosen the best response.3
those who learn none of the three subject = U  (A U B U C) = 63(a+b+c+d+e+f+g)
 one year ago

hartnnBest ResponseYou've already chosen the best response.3
so now did u get how e=63(a+b+c+d+e+f+g) @sha0403 ?
 one year ago

sha0403Best ResponseYou've already chosen the best response.0
ook thank u so much u all for helping me...now i get it... ;)
 one year ago
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