Study the given diagram carefully and answer the question. The numbers in different sections indicate the number of persons. How many such females are there who are also tax-payers but NOT doctors?

Explanation

To answer the question, let's analyze the Venn diagram: We need to find the number of females who are also tax-payers but NOT doctors. Identify the relevant sections: The overlapping section between "Females" and "Tax-payers" without including "Doctors" is represented by the number 15 in the Venn diagram. Conclusion: Therefore, the number of females who are also tax-payers but NOT doctors is 15. Answer: 15