Question

Let a be the set of square of natural numbers and x,y are any two elements of a then

Answer 1

Answer:

let X=$2^{2}$ and $y=3^{2}$

then xy=$2^{2}$*$3^{2}$

           =$6^{2}$

           $6^{2}$ ∈ a

Therefore, xy∈a

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Step-by-step explanation: