# Maths Worksheet

Topics: Chemistry, Tea, Coffee Pages: 3 (1007 words) Published: May 4, 2013
6. In a survey of 400 students in a school, 100 were listed as taking apple juice, 150 as taking orange juice and 75 were listed as taking both apple as well as orange juice. Find how many students were taking neither apple juice nor orange juice. 7. A survey shows that 73% of the Indians like apples, whereas 65% like oranges. What % Indians like both apples and oranges?

8. In a school there are 20 teachers who teach mathematics or physics. Of these 12 teach mathematics and 4 teach both physics and mathematics. How many teach physics?
9. There are 200 individuals with a skin disorder, 120 had been exposed to the chemical C1, 50 to chemical C2, and 30 to both the chemicals C1 and C2. Find the number of individuals exposed to
(1) chemical C1 but not chemical C2
(2) chemical C2 but not chemical C1
(4) chemical C1 or chemical C2
10. In a survey it was found that 21 peoples liked product A, 26 liked product B and 29 liked product C. If 14 people liked products A and B, 12 people like C and A, 14 people like B and C and 8 liked all the three products. Find now many liked product C only.

7. For any two sets A and B prove by using properties of sets that: (A B A - B = A ∩ ∪) ( )

6. There are 210 members in a club. 100 of them drink tea...