Sets : grade 8

Which of the following collections Are sets ?

• All red flowers in a park.

• All integers less than -5.

• All persons of repute in your colony .

• All good players in your school.

a collection of well defined objects

• Fraction

• Integers

• Composite numbers

• Sets

Write A = {4,6,8,9,10,12,14,15,16,18} in set-builder form.

Which one of them stand true?

• {1,2,3,1,2,3,1,2,3......} is an infinite set.

• If C is the set of all prime numbers less than 80, then 57 belongs to C.

• {x:x belongs to W, x+5=5} is a singleton set.

• 0 belongs to null set

a set which has at least one element is called ?

• Singleton set

• Cardinal set

• Non-empty set

• Equivalent set

P = {a,b,c,d,e,f,g,h,I,j,k,l,m}

• Roster form.

• Set builder form

• Universal for

• Set builder notation

A = {1,2,3,4,5,6} and B = {2,4,6} which of the following represent A U B.

• {3,4,6}

• {2,4,6}

• {1,2,3,4,5,6}

The _________ of sets is the set of all members of both sets without repeating any of the members in the sets.

• Intersection

• Union

• Universal set

• Empty set

Find n(A) when A = {14,16,18,20,22,24}

• 4

• 12

• 8

• 6

What kind of set is a set that you can count elements

• Infinite set

• Finite set

• Non empty set

• equivalent set