Hi dear,

Girls are not eligible for NDA.So your sister is not eligible for NDA 2020 also science stream is compulsory for NDA.

Hope it helps. Hard luck.

Females are not eligible to apply for NDA Examination, they cannot apply for this exam. As per notification they have not included females till now. Only male candidates unmarried from 16.5- 19.5 years can apply for this exam. There are different segment like army, navy and airforce. It was just announced but from when they will include females for NDA is not clear yet.