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7 people - A, B, C, D, E, F and G stay on a 7 floors building (No body stays on ground floor which is named 0 floor). They are professors of different subjects - Finance, English, Computer, Physics, Marketing, Accounts and Mathematics (but not necessarily in the same order). The professor of Finance stays on either 2nd or 5th floor. There are three floors between the persons who teach English and Finance. And also there are 2 floors between the persons who teach English and Computers. Physics Lecturer stays immediately below the Marketing Lecturer. Accounts Lecturer stays below Mathematics Lecturer (not necessarily immediately below Mathematics Lecturer). Accounts lecturer does not stay on 1st or 2nd floor. How many floors are between Finance Lecturer and English Lecturer ?

An autmobile travelling at 80 km//h has tyres of 75.0 cm diameter. What is the angualr speed of the tyres about their axles ? If the car is brought to stop uniformly in 30 complete turns of the tyres without skidding, what is the magnitude of angular acceleration of the wheels ? How far does the car move during the braking ?

Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows: 1 6 2 3 5 12 5 8 4 8 10 3 4 12 2 8 15 1 17 6 3 2 8 5 9 6 8 7 14 12 (i) Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5 - 10. (ii) How many children watched television for 15 or more hours a week?

Few days back, our school organised health checkup camp. Eminent doctors (General physicians, opthalmologists, dentist,etc). Doctor X leader of the doctor's team, gave us tips about essential conditions of keeping good health extrinsic and intrinsic causes of disease as well as types of diseases. Enter students of the school were examined by the doctors. Next day our class teacher asked us to anwer to the following questions: (i) List atleast three conditions essential for good health. (ii) How can we keep our surroundings clean? Mention at least two ways. (iii) How would you define a diseases?