Question

If A = {1,{1,2}} , write all the subsets of A.​

Answer 1

Answer:

We know that number of subsets of any set is 2

n

where n is the number of elements in that set.

Every non-empty set has two subsets ϕ and the set itself.

(i) The subsets of {a} are ϕ and {a}.

(ii) The subsets of {a,b} are ϕ,{a},{b},and{a,b}.

(iii) The subsets of {1,2,3} are ϕ,{1},{2},{3},{1,2},{2,3},{1,3},and{1,2,3}

(iv) The only subset of ϕ is ϕ.

Answer 2

Answer:

its answer is

Step-by-step explanation:

let {2,3} = B , then A = {1,B }

therefore, P(A) = {Φ , {1} , {B} , { 1, B } }

it implies ,

P(A) = { Φ , { 1 } , { 1,2 } , { 1, { 2, 3 } }

Hence this is our answer .