set operations

if A={a,b} and B ={a,b,c} then what are the relation between them

• A and B are overlapping sets

• A and B are disjoint sets

• A is subset of B

• B is subset of A

if A={1,3,5} and B={2,4} then what are the relation between them

• Disjoint sets

• overlapping sets

• subsets

• joint sets

if A ={a,b,c} and B ={b,d} then AUB = ?

• {b}

• {a,c}

• {a,b,c,d}

• {d}

if A is the set of multiple of 2 less than 10 and B is the set of multiple of 3 less than 10 then AnB =?

• {2,3}

• {6}

• {2,4,8,}

• {3,9}

if A ={a,b,c} and B ={b,d,e} then n(AUB) = ?

• 3

• 4

• 5

• 6

if 25 students liked mathematics,20 liked science and 10 students liked both subjects.all the students like at least one subject.how many students are there ?

• 55

• 45

• 35

• 25

in a group of 45 students,25 liked tea ,20 liked coffee and 10 students liked both then how many students don't like both ?

• 10

• 20

• 30

• 5