Question

A ={1,2,4,5} write three subsets of A
write in proper steps
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Answer 1

Step-by-step explanation:

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

Step-by-step explanation:

subsets of A={1,2,4,5}

A={1,2,4,5} then

P(A)={{,{1},{2},{4},{5},

{1,2},{1,4},{1,5},

{2,4},{2,5}

{4,5},{1,2,4,5}}