Class-11-Math Set #25: Tools we absolutely need before solving real-world sets problems

Опубликовано: 12 Июль 2026
на канале: dostotussigreatho
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In this video, we learn the two following absolutely must-know formulas when it comes to solving real-world sets problems:

1. number of elements (A union B) = number of elements (A) + number of elements (B) - number of elements (A intersection B)

2. number of elements (A union B union C) =
number of elements (A) + number of elements (B) + number of elements (C)
number of elements (A intersection B)
number of elements (B intersection C)
number of elements (C intersection A)
number of elements (A intersection B intersection C)

Cheers,
https://risingpearl.com

Union of sets:
   • Class-11-Math Set #16: What is Union of Sets?  

Intersection of sets:
   • Class-11-Math Set #18: What is Intersectio...  

Difference of sets:
   • Class-11-Math Set #19: What is Difference ...  

Complement of sets:
   • Class-11-Math Set #22: What is a Complemen...  

Sets Problem-set 1:
https://risingpearl.com/class-11-math...
Sets Problem-set 2:
https://risingpearl.com/class-11-math...
Sets Problem-set 3:
https://risingpearl.com/class-11-math...
Sets Problem-set 4:
https://risingpearl.com/class-11-math...
Sets Problem-set 5:
https://risingpearl.com/class-11-math...
Sets Problem-set 6:
https://risingpearl.com/class-11-math...
Sets Problem-set 7:
https://risingpearl.com/class-11-math...