BITSAT 2014 Paper

If a is the first term and d is the common difference of the associated A.P.

1

q

=

1

a

+ (2p - 1) d ,

1

p

=

1

a

+ (2q - 1) d
⇒ d =

1

2pq

If h is the 2(p + q)th term

1

h

=

1

a

+ (2p + 2q - 1) d
=

1

q

+

1

p

=

p+q

pq