Question

who can remove p.m. and president from there position

Answer 1

members of legislative assembly has the power to remove them from their position

Answer 2

The members of the parliament have the right to remove both the prime minister and the president from their position. A president can be removed by passing impeachment in both the houses of the parliament. And a prime minister can be removed by passing no confidence motion against him in both the houses. But only when the motion passes with majority. Hope this helps!