Question

50 students sing, 60 students do not dance and 25 students do both in a class of 100 students.

5. How many students neither sing nor dance?

a) 65

b) 35

c) 15

d) Cannot be determined

6. How many students only dance?

a) 10

b) 15

c) 20

d) Cannot be determined

7. How many students at least do either sing or dance?

a) 60

b) 50

c) 75

d) 65​

Answer 1

Answer:

a b a is sequence bro........... .

Answer 2

Answer:

n(A)=50

n(B)=60

n(A Union B)=25

n(X)=100

50+60-25 =85

then 100-85=15

Ans. is (c)15