JEE Advanced Model Paper 9 with solutions for online practice

In a sequence of (4n + 1) terms the 1st (2n + 1) terms are in A.P. whose common differenceis 2 and the last (2n + 1) terms are in G.P. whose common ratio is

1

2

. If the middle termsof the A.P. and G.P. are equal, then Middle term of the sequence is