Happy new year to all my subscribers

Which newspaper do you subscribe for ?

In a colony of 170 members 70 subscribe Deccan Chronicle and 120 subscribe Times of India. How many subscribe only Deccan Chronicle? (Each subscribes at least one.)

A private telephone company serving a small community makes a profit of Rs. 12.00 per subscriber, if it has 725 subscribers. It decides to reduce the rate by a fixed sum for each subscriber over 725, thereby reducing the profit by 1 paise per subscriber. Thus, there will be profit of Rs. 11.99 on each of the 726 subscribers, Rs. 11.98 on each of the 727 subscribers, etc. What is the number of subscribers which will give the company the maximum profit?

Comprehension: Study the following information carefully and answer the question given below it: In a certain town, there are 5000 people. Out of them, 1200 do not subscribe for any newspaper, 2700 subscribe to "The Indian Express' and 1800 subscribe to "The Hindu'. How many subscribe to 'The Indian Express' only?

Comprehension: Study the following information carefully and answer the question given below it: In a certain town, there are 5000 people. Out of them, 1200 do not subscribe for any newspaper, 2700 subscribe to "The Indian Express' and 1800 subscribe to "The Hindu'. How many subscribe to both the newspapers?