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gabriellebarnes66
12.12.2019 •
Mathematics
In a group of 191 students, 10 are taking french, business and music, 36 are taking french and business, 20 are taking french and music, 18 are taking business and music, 65 are taking french, 76 are taking business, and 63 are taking music (note that each of the above groups may also take other subjects). let f, b, m be the sets of students taking at least french, business, or music, respectively (i.e. that subject and possibly, but not necessarily, others). find the number of students in the set f4b4m.
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Ответ:
Correct question: Find the number of students in the set FΔBΔM
FΔBΔM = 130
Step-by-step explanation:
In set notation the symbol Δ means symmetric difference. The symmetric difference of two or more sets is the combination or union of the elements of the sets excluding their interception.
in the question the following are given;
n(F∩B∩M)=10
n(F∩B)=36
n(F∩M)=20
n(B∩M)=18
n(F)=65
n(B)=76
n(M)=63
From the attached Venn diagram,
FΔBΔM= 35+32+19+26+10+8
FΔBΔM= 130
Ответ:
22 blocks
Step-by-step explanation:
8 blocks west is ont he other side of 14 blocks east, we simply add both.
8 + 14 = 22 blocks