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36 medals are given in dance, 12 in dramatics and 18 in music. Total no. of persons who got medals = 45. 4 persons got in all 3. How many got medals in exactly 2? In the video lecture (Set relations and functions – Venn diagrams and operation of sets), the three equations are a+d+e+g=36,b+d+f+g=12, e+f+g+c=18 is given. In these equations g is being removed, but why isn’t the value on R.H.S being subtracted accordingly?

36 medals are given in dance, 12 in dramatics and 18 in music. Total no. of persons who got medals = 45. 4 persons got in all 3. How many got medals in exactly 2? 
 
In the video lecture (Set relations and functions – Venn diagrams and operation of sets), the three equations are a+d+e+g=36,b+d+f+g=12, e+f+g+c=18 is given. In these equations g is being removed, but why isn’t the value on R.H.S being subtracted accordingly?

Grade:11

1 Answers

Drumil Patel
36 Points
7 years ago
Answer of the question is 13 as 36+12+18+4-45=25(Which is the value of (da int dr)+(dr int m)+(m int Da))*(int=interestion)(25-12[3{da int dr int m}]
 

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