(1) A(2) = 5
(2) A(1) - A(2) = 5
Answer : D
From statement (1) --- A(2) = 5 . It is given that A(n) = A(n-1) / n.
Hence A(2) = A(1) / 2
=> A(1) = 10
A(2) = 5
=A(3) = A(2) / 3 = 5 /3
A(4) = A(3) / 4 = 5 /( 3 * 4) = 5 /12
Hence statement (1) alone is sufficient to aswer the question.
From statement (2) --- A(1) - A(2) = 5
=> A(1) - A(1) /2 = 5
=> A(1) = 10
Hence A(2) = 5
A(3) = A(2) / 3 = 5 /3 ...
Hence statement (2) alone is sufficient to answer the question.
NOTE: Always remember sum of series is
Further n cannot be equal to zero or negative as n = number of the term and not the value of the term.
