Question

in a class. of 70 student ,45 students like to play cricket . 52 student like to play kho kho .all the students like to play at least one of the two games. how many students like to play cricket or kho kho​

Answer 1

Answer:

Answer is 7

Step-by-step explanation:

Tolat number of students is 70

Play cricket 45 students

And kho_kho50

Therefore, number of students to play cricket and kho_kho

=52-45

=7

Answer 2

Answer:

Total number of students = 70

Let A be the set of students who likes to play Cricket.

Let B be the set of students who likes to play Kho-kho.

Hence the number of students who likes to play

Cricket or Kho-kho is n (A U B )

n (A U B ) = 70

Number of students who likes to play both Cricket and

Kho-kho = n (A n B)

n (A) = 45, n (B) = 52

We know, n (A U B ) = n (A) + n (B) - n (A n B) .

n (A n B) = n (A) + n (B) - n (A U B )

= 45 + 52 - 70 = 27

Number of students who likes to play both the games are 27,

Number of students who likes to play Kho-kho are 45.

Number of students who likes to play only Cricket = 45 -27 = 18

A n B is the set of students who play both the games.

n (A n B) = 27