Consider all \( 2^{n}-1 \) non-empty subsets of the set \( \{1,2 \), \( \ldots . ., n\} \). For .... VIDEO
Consider all \( 2^{n}-1 \) non-empty subsets of the set \( \{1,2 \), \( \ldots . ., n\} \). For every such subset we find the product of
\( \mathrm{P} \)
reciprocals of each of its elements. Sum of all these
W
product is
(1) \( n \)
(2) \( n+1 \)
(3) \( n \) !
(4) \( n !-1 \)
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