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(1 - 1/3) (1 - 1/4) (1 - 1/5 )... (1 - 1/n ) =?

1/n
2/n
2(n - 1)/n
2(n + 1)/n

Correct Answer: 2/n

Explanation:

Given Exp.= (1 - 1/3) (1 - 1/4) (1 - 1/5)...(1 - 1/n)
= (2/3) x (3/4) x (4/5) x ... x (n-1/n)
= 2/n.

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