Algebra Of Sets

CBSE XI Science Maths Sets

I am unable to solve such questions...

 

Asked by nitishkrnehu09 18th November 2017 9:50 PM

Answered by Expert

A = {a.b,c.e.f} B = {c,d,e,g} and C = {b,c,f,g} and U = {a,b.c,d,e,f,g,h} Draw venn diagrams to represent  the following sets (i) A union ( B intersection C)  (ii) (B-C ) union (C - B)

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Preeti and Rashmi fought for the election for the post of the head girl of the school, for which the students of class 10th,11th and 12 th voted.If 3/7 of students voted for preeti only,3/7 for Rashmi,50 for both and 50 for nine, then find using Venn diagrams.                     1. The total number of students in class 10,11 and 12 th

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CBSE XI Science Maths Sets

Plz 4th sum

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if n[a]=5,n[b]=7,n[a intertsect b]=3 then n[a union b]=

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CBSE XI Science Maths Sets

What is de Morgan's law for set difference

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how to plot the numbers on venn digram 

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On a class of 40 students,  25 like to play football and 27 like to play cricket.  All the students like to play at least one game. Draw Venn diagram to represent how many students play: 1. both football and cricket, 2. football only,  3. cricket only. 

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In a club, two-fifths of the members play badminton and three-fourths of the members play lawn tennis. If 30 members play none of these two games and 120 members play both, find the number of members in the club using a Venn diagram.

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In a class of 80 students, 45 students got distinction in Mathematics 32 got distinction in English and 26 students got distinction in both the subjects. Represent this information by a Venn-diagram. Hence find the number of students getting distinction in: (i) Mathematics only (ii) English only (iii) any of the two subjects (iv) neither Mathematics nor English.

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In a school, 33 students are in a hockey team, 30 are in the football team and 33 in the cricket team. If 12 play hockey and cricket, 10 play cricket and football, 11 play hockey and football and 6 play all three games, find (i) how many students are there in all? (ii) how many play football only? (iii) how many play cricket only (iv) how many play hockey only?

CBSE XI Science Maths Sets

a={1,2,3,4,5}, B={5,6,7} writeAUB

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Number 1 to 140 students are given- in which even number students take maths as a favourite subject,divisible of 3 take chemistry as a favourite subject and divisible of 5 take physics as favourite subject then how many students didn't take favourite subject?

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CBSE XI Science Maths

 In a survey of 700 students in a medical college 200 event for a regular entrance coaching to 95 attendant only correspondence coaching 115 attended both regular and correspondence coaching fine how many got admission without any entrance exam 

CBSE XI Science Maths Sets

please answer this  question............

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let u be the Universal set,and A and B be any two sets of n(u)=20,n(a)=12,n(b)=4 and n(a intersection b)=17 find the following 1.n(A intersection B)

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CBSE XI Science Maths Sets

Please solve these questions

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Question is given in attached file. How to justify wheather it is true or false. 

CBSE XI Science Maths Sets

In group of 800 people,500 people speak Hindi and 320 people speak english . Find how many people can speak both English and Hindi ? speak

CBSE XI Science Maths Sets

Hello sir.

Please explain these two formulae:

1) A-B=A⇔AB=Ø

2) AB⇔B'A'

 

CBSE XI Science Maths Sets

Hello Sir,

Please explain the below formulae with their venn diagrams.

1) A-B=A⇔AB=Ø

2) AB⇔B'A'

3) A(BC)=(AB)(AC)

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a and b are two sets such that n(a)= 3 and n( b)= 6 , find minimum value of n(a union b) and maximum value of n(a union b)

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A×(B∩C)=(A×B)∩(A×C) prove tht  

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If A ={1,2,3,4,5,6,7,8} B=2,4,6,8,10,12} and C=1,3,5,7,9,11,13} then show that A-(BUC)=(A-B) u A-C

CBSE XI Science Maths Sets

PLEASE ANSWER THIS QUESTION ON SETS! 👇

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