Question

16.When A = { x : x ∈ N, -1 < x ≤ 3}, then n(A)=?

Answer 1

A = { x : x ∈ N, -1 < x ≤ 3},

this means x is a natural number , where x us greater than -1 (this is obvious ) and lesser than or equal to 3

so, A ={1,2,3}

so n(A) = {3}

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Answer 2

Answer:

A = { 1,2,3}

Number of elements in A are 3

Step-by-step explanation:

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