Whether a constitution is rigid or flexible depends on the nature of amendment. If the constitutional laws and ordinary laws are amended in separate ways, it is a rigid constitution. In a flexible constitution constitutional laws and ordinary laws are amended in the same way.
Some provisions of the Constitution of India can be amended by the Indian Parliament with simple majority. The amendment of most other provisions of the constitution requires a special majority in both houses of the parliament. There are some other provisions of constitution which cannot be amended by the parliament alone.