Example 41 Fifty students were surveyed, and asked if they were taking a social science (SS), humanities (HM) or a natural science (NS) course the next quarter. 26 were taking a HM course 9 were taking SS and HM 10 were taking HM and NS 7 were taking none 21 were taking a SS course 19 were taking a NS course 7 were taking SS and NS 3 were taking all three How many students are only taking a SS course? It might help to look at a Venn diagram. SS a NS b g C h HM

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Example 41
Fifty students were surveyed, and asked if they were taking a social science (SS), humanities
(HM) or a natural science (NS) course the next quarter.
26 were taking a HM course
9 were taking SS and HM
10 were taking HM and NS
7 were taking none
21 were taking a SS course
19 were taking a NS course
7 were taking SS and NS
3 were taking all three
How many students are only taking a SS course?
It might help to look at a Venn diagram.
SS
a
NS
b
g
C
h
HM
Transcribed Image Text:Example 41 Fifty students were surveyed, and asked if they were taking a social science (SS), humanities (HM) or a natural science (NS) course the next quarter. 26 were taking a HM course 9 were taking SS and HM 10 were taking HM and NS 7 were taking none 21 were taking a SS course 19 were taking a NS course 7 were taking SS and NS 3 were taking all three How many students are only taking a SS course? It might help to look at a Venn diagram. SS a NS b g C h HM
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