What is the provisions for payment of service tax on ocean freight w.e.f.01.04.2016 onward. Can you please explain

Sum of the first P ,Q and R term of an ap are .a ,b and c respectively prove that  a/p (q-r) + b/q(r-p) + c/r(p-q)=0

I am a retail seller 
I purchase many product from different different supplier I have a gst no I want to file a gst nil return how can I file return 
I haven't file any single return yet now?
My query how many return I need to file?
Which return I need to file in different different times and please provide me due dates of return my income is under 2.5 lac

Sir.... in  cbse board exam  2017-18... math  questions will  be  from   where ncert  only  or   other  books  I  am  little bit  confused  about it.......can  I  score 100  marks  in math  only doing  ncert   for  class ....please tell  me  about  it...i..am  waiting for  your  answer. ...

what is invoice format for RCM?

Bad debts recover ac comes under which group

Works contract tax under gst and how mainten book of accounts please give me all knowledge 

Is GST paid on reverse charge basis is refundable?
Kindly guide

 i am having problem in 7th question please solve it

How to get good marks in math

• Factors of x-1
  

Entry for reverse charge 

Video?

First agm to be held in? 

What is capital budgeting?

Z 6x 5y

In class 9, ch 10 ,ex 10.3 ,3 question wrong  triangles are proved congruent 

Prove that root 2 is irrational