For a linear programming problem, if the feasible region is bounded by the intercepts on the positive axes such that the boundary lines pass through (4,0), (0,2) and (2,0), (0,4) respectively, which of the following sets of inequalities represents a valid system with non-negative constraints x, y ≥ 0?

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?