Number of molecules present in 1 ml of 250 μg per ml solution of 10 kDa protein will be - (Avogadro's number is 6.022 x
quantitative reasoning analysis shows ratio, percentage and series logic determine correct calculation. Consequently 1.50 x 10 ¹⁶ emerges as the valid choice since it meets mathematical and logical criteria, aligning with established principles in aptitude and reasoning literature.
Ref: Agrawal, Quantitative Aptitude for Competitive Examinations, Chapter 5, Logical Reasoning and Probability, covers ratios, percentages, series completion, time-distance and analytical reasoning explaining problem-solving strategies for competitive assessments.