+0  
 
+1
1
1680
4
avatar+394 

 

 

Venn Diagram 

 

 

 

 

(a) How many of these students like exactly two of these composers?

 

(b) How many of these students like exactly one of these composers?

 

(c) How many of these students like none of these composers?

 

(d) How many of these students like Mozart, but neither Beethoven nor Haydn?

 

(e) How many of these students like Haydn and exactly one of the other two?

 

(f) How many of these students like no more than two of these composers?

 Nov 30, 2017
 #1
avatar+129849 
+1

(a)   M and B  =  14

       B and H   =  14

       M and H  =  20         Total  48

 

(b)  M  =  9

      B   =  15

      H   =  5             Total   29

 

(c)   2      [ the number outside the circles ]

 

(d)   9

 

(e)  No more than  2   =   Total - Those who like 3 of them  =  63 - 8   =  55

 

 

cool cool cool

 Dec 1, 2017
 #2
avatar+394 
0

 48 is wrong > Use the Venn diagram to determine the number of students that like exactly two composers.<  how do i calculate that 

ladiikeiii  Dec 1, 2017
 #3
avatar+129849 
+2

Sorry.....I believe that exactly 2 should be   6 + 6 +  12   =   24 

 

 

cool cool cool

 Dec 2, 2017
 #4
avatar+394 
0

(e) How many of these students like Haydn and exactly one of the other two?

 

E isnt 55. (55 is wrong)

 

(f) How many of these students like no more than two of these composers?

ladiikeiii  Dec 5, 2017

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