hi manoj

yes u r correct!
but there is other solution too!


take first 5 terms ,u can clearly see '5' lies b/w (3,3) and (4,4)


similarly '3' lies b/w (4,4) and (5,5)

therefore '4' should lie b/w(5,5) and (3,.....)


..... represetns the next term in series!
Clearly it should be '3'.


bye