MCQ PracticeWhen a particular number is subtracted from each of 7, 9, 11 and 15, the resulting numbers are in proportion. The number to be subtracted is -Subject: MathematicsTopic: Ratio And ProportionA1B2C3D5Correct Answer: CPractice QuizBack to MCQsRelated MCQsThe study of structure and functions of cells is termed asWho is known as father of Biology?Membrane bound organelles are not found in the cells of