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

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

Aditi_Singh
 3 years 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
 3 years 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
 3 years 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
 3 years 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
 3 years 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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