The ans to the 4 problem is option 2)I, II, IV, V.
847+53=900 which is the square of 30.
847*7=5929 which is the sqaure of 77.
847/11=77 which is not a perfect square.
847/7=121 which is the square of 11.
847-6=841 which is the square of 29
PS:plz give the ans for the first 2 questions