Case study Chapter 11(Three dimension geometry) A line through the points A(3, 4, 1) and B(5, 1, 6) is drawn.(Case study three dimension geometry 2 ) Based on the above information answer the following questions: (i) Direction cosines of the line passing through the points A and B are (a) (b) (c) (d) (ii) Direction … Read more
Case study Chapter 11 (Three dimension geometry) The equation of motion of a missile are x = 3t, y = -4t, z = t where the time ‘t’ is given in seconds, and the distance is measured in kilometres.(Case study three dimension geometry 1) (i) What is the path of the missile ? (a) Straight … Read more
Case study Chapter 12 (Linear programming) Aeroplane is an important invention for three reasons.It shortens travel time, is more comfortable and facilitates the transport of heavy cargo.(Case study linear programming 5 ) An aeroplane can carry a maximum of 200 passengers. A profit of ₹ 400 is made on each executive class ticket and profit … Read more
Case study Chapter 12 (Linear programming) A share is refferred to as a unit of owner ship which represents an equal proportion of a company’s capital. A share entities the shareholders to an equal claim on profit and loss of company. Dr. Ritam wants to invest at most ₹ 12,000 in two type of shares … Read more
Case study chapter 12(Linear programming) A bakery in an establishment produces and sells flour-based food baked in an oven such as bread, cakes, pastries, etc. Ujjwal cake store makes two types of cake. First kind of cake requires 200 g of flour and 25 g of fat and 2nd type of cake requires 100 g … Read more
Case Study Chapter 12(Linear programming) A dealer Ramprakash residing in a rural area open a shop to start his bussiness. He wishes to purchase a number of ceiling fans and table fans. A ceiling fan costs him ₹ 360 and table fan costs ₹ 240. Based on the above information answer the question(Case study linear … Read more
Case study chapter 12 (Linear programming) Owner of a whole sale computer shop plans to sell two type of computers – a desktop and portable model that will cost ₹ 25000 and ₹ 40000 respectively.(Case study linear programming 1 chapter 12 class 12) Based on the above information answer the question (i) If the number … Read more
Case study Chapter 13(Probability) In answering a question on a multiple choice test for class XII, a student either knows the answer or guesses. Let 3/5 be the probability that he knows the answer and 2/5 be the probability that he guesses. Assume that a student who guesses at the … Read more
Case study Chapter 13(Probability) A reliability of a COVID PCR test is specified as follows:(Case study problem probability 8 chapter 13 class 12) Of people having COVID, 90% of the test detects the disease but 10% goes undetected. Of people free of COVID, 99% of the test is judged COVID negative but 1% are diagnosed … Read more
Case study Chapter 13 (Probability) Nisha and Arun appeared for first round of an competitive examination for two vacancies. The probability of Nisha’s selection is 1/6 and that of Arun’s selection is 1/4 based on the above information, answer the following question:(Case study problem probability 7 chapter 13 class 12) (a) Find the probability … Read more