Question

can we take pcm to be a n ias​

Answer 1

$\huge\mathscr\pink{Hey \: Mate}$

Of course you can take PCM to become an IAS. As there are many IAS who are from PCM stream.

And Best Of Luck.

I wish you will achieve your goal

Answer 2

Yes...

You can take PCM for studying IAS. But you have to be very much expert in Maths for that..