Question

can you pls tell me the concept of sets​

Answer 1

Answer:

set is a collection of well defined objects. example : a group of boys of class 9 of St james school.there are 6 types of sets :singelton set, null set, infinite set,finite set etc

they can be described on the basis of the elements of the sets.

Answer 2

Sets are the well-defined collection of objects.

There are 10 Types of sets:

✪ Singleton Set : Sets that contain only one object.

➜ { 12 } , {0} , { a } , e.t.c

✪ Empty/ Void/ Null Set : Sets that contain zero object.

➜ { }

✪ Finite Sets : Sets that have finite or countable number of objects.

➜ { 1,2,5,8,5,4,8 } , { a,b,c,d,e,f,..., x, y,z }

✪ Infinite Sets : Sets that have infinite number of objects.

➜ { 1,2,3,4,5,... } , { 0,-1,-2,-3,... }

✪ Equal Sets : Sets A and B are said to be equal sets only if they have same number of objects and of same type or if they have same elements.

➜ A = { a,b,c,d,e,f }

B = { a,b,c,d,e,f }

So, A = B

✪ Equivalent Sets: Set A is said to be equivalent to set B if each sets have same number of elements.

➜ A = { 1,2,3,4 }

B = { a,b,c,d }

✪ Subset: Set A is said to be subset of B if all set B contains all elements of set A.

➜ A = {b,c,d}

B = {a,b,c,d,e,f }

So, A ⊆ B

✪ Superset: Set A is said to be superset of B if set A contains all elements of set B.

➜ A = {a,b,c,d,e,f}

B = { b,c,d,e }

So, A ⊇ B

This is for class XI.