(i) List atleast three conditions essential for good health.
(ii) How can we keep our surroundings clean ? Mention atleast two ways.
(iii) How would you define a 'disease' ?

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?

(i) In how many ways can you split 11 identical coins among three people? (ii) How many ways are there if each person has to atleast one coin?

A consumer wants to buy two goods. The price of two goods are Rs.4 and Rs.5 respectively. The consumer's income is Rs.20. (i)Write down the equation of budget line. (ii)How much of good 1 cm the consumer consume, if he spends his entire income on that good ? (iii)How much of good 2 can he consumer if he spends his entire income on that good ? (iv)What is the slope of budget line ?

(i) Why does your mother insist you to have a glass of milk daily ? (ii) Mention atleast two diseases which are associated with skeletal system.

A box contains two white balls, three black balls and four balls. In how many ways can three balls be drawn from the box, if atleast one black ball is to be included in the draw ?