The mathematical expression 9 € t means:
9 union t
9 intersection t
09 is an element of t
9 is not an element of t

09 is an element of T

Step-by-step explanation:

Given:

9 ∈ T

We need to find the Mathematical expression for  9 ∈ T.

Now we know that,

∈ is a Latin letter which is used in set membership and is denoted by "is an element of".

Hence from above we can say that,

9 ∈ T means 9 is an element of T.

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Step-by-step explanation:

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