Thanks alot bro.But i think i have checked for any sharp objects
on the rim and tyres,but there are none.And yes.i did message the
tubes once i put them in,to make sure there are no gaps.I have also
changed the rim tapes.
That's why the main point is that,i did whatever i did,but still it
punctured.For what i recall,the last tube was punctured only when
after two days i pumped more air.By right is 110psi,on the first
day when i installed,i pumped 95 psi,then after 2 days i pumped to
110psi.That's when it got punctured! 
.
anyway,u ridin road bike?
