Let \( \xi= \) the set of all letters in the word 'TAMILNADU' and \( X=\{x: x \) is a vowel and ... VIDEO
Let \( \xi= \) the set of all letters in the word 'TAMILNADU' and \( X=\{x: x \) is a vowel and \( x \in \xi\} \)
Tell \( n(\xi) \) and \( n(X) \).
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