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Junior | Next Rank: 30 Posts
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OG Sets question

by vikz_316 » Fri Jan 02, 2009 1:35 pm
Hi, I cant seem to solve this problem. Can someone please help me?
The skeleton-
200 students majoring in 1 or more sciences
130 students - chemistry
150 students - bio
At least 30 students not majoring in both
Q - range of students majoring in both

Answer is 110-130, but I would really appreciate a break down. :?
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by DavoodBeater » Fri Jan 02, 2009 2:53 pm
well, 110 is easy, isnt it?
the problem is with 130!
since the Q can not be bigger than number of chemistry students, therefore the range is 110 to 130.
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Junior | Next Rank: 30 Posts
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by vikz_316 » Fri Jan 02, 2009 10:51 pm
yes, that thought did not enter my head. i got the 110 all right. thanks for your help DavoodBeater
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