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1.18 is a number and number do not contain any sets (of any kind).
They are not equivalent sets.
There are many ways of classifying sets. One way is by the size of the set: its cardinality.On this basis a set may beFinite,Countably infinite, orUncountably infinite.
Equivalent sets are sets with exactly the same number of elements.
There is no such number since the two sets are the same.