Ek kaksha mein 100 vidyarthi mein se 63 vidyarthi sev pasand karte hain aur 76 vidyarthi narangi pasand karte hain to kitne vidyarthi sev or narangi dono pasand krte h
Answers
Answer:
39
Step-by-step explanation:
Using sets The basic concept of class 11th.
Sets and Relation , is the wide part of Mathematics and can be easily solved by knowing some principals which are necessary to know.
For example,
=> (AUB) = n(A) U n(B) -n(A n B)
=> the sign of U is called Union and the sign opposite it of U => n is called intersection.
So,
According to question,
n(AUB)= 100
As, this is the total sum of students in the class,
A= 63, this is a perfect number of likings of apple among the class students.
B= 76 Is the correct wantings of a class of stydent of total 100 about narangi.
..
To find :-
How many students like both the fruits.
So, here we go with the equation.
=>n(AUB)= n(A) + n( B)-n(AnB)
=> 100 = 63+76- n(AnB)
=> 100 =139 -n(AnB)
=> 100-139= -n(AnB)
=> -39= -n(AnB)
=> 39 = n(AnB)
Thus 39 is the number liked by students, its the intersection among The both likers of apple and narangi!
Ans.
REFER TO THE ATTACHMENT
