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 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
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#

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Aditi_Singh
 one year ago
Best ResponseYou've already chosen the best response.2dw: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..

sha0403
 one year ago
Best ResponseYou've already chosen the best response.0where do you get e=63(a+b+c+d)?

Aditi_Singh
 one year ago
Best ResponseYou've already chosen the best response.2It 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)

sha0403
 one year ago
Best ResponseYou've already chosen the best response.0why u no include f in e=63(a+b+c+d+e)? can u explain me? i still not understand....

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

sha0403
 one year ago
Best ResponseYou've already chosen the best response.0i don't know but the answer is 3..

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

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

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

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

sha0403
 one year ago
Best ResponseYou've already chosen the best response.0ook thank u so much u all for helping me...now i get it... ;)
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