Hey,

The courses offered by NIOS is accepted all over India and there is no condition to reject that.

If you apply for Maths from NIOS then you will be eligible to apply for the AFCAT as well as CDS exam.

You can go to Indian Air Force either by giving the CDS or AFCAT exam.

After clearing the entrance you will be called for SSB and if you get recommended you will be given admission into Aur force Academy.

Hope that helps.

Thank you