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This question appeared in
BCS 12th Preliminary Question Bank Quiz and Solution General knowledge 1990 part 1Question 16
BCS 12th Preliminary Question Bank Quiz and Solution General knowledge 1990 part 1Question 16
BCS 12th Preliminary Question Bank Quiz and Solution General knowledge 1990 part 1Question 16
BCS 12th Preliminary Question Bank Quiz and Solution General knowledge 1990 part 1Question 16