The total cost of a firm is C-1/3x²-6x2 + 40x =15. Find the equilibrium output if price is fixed at Rs. 20 per unit.

What is weighted average? Under what conditions weighted average is preferable to a simple average?

What do you mean by statistics? Explain its importance to economics and business. Also discuss the various functions of statistics.

The profits (in Rs. Lakhs) earned by 100 companies during the 1987-88 are shown below. Compute (a) Mean, (B) Variance, and (c) Standard deviation by using items and their squares.

A sum of money is deposited by Krishna which compounds interest annually. The amount at the end of 2 years is Rs. 5000 and at the end of 3 years is 5200. Find the money deposited and the rate of interest.

A stereo manufacturer determines that in order to sell x units of a new stereo, the price per unit, in rupees, must be p(x) = 1000-x. The manufacturer also determines that the total cost of producing x units is given by C(x) = 3000+20x.

a) Find the total revenue R(x).

b) Find the total profit P(x).

c) How many units must the manufacturer produce and sell in order to maximise profit?

d) What is the maximum profit?

e) What price per unit must be charged in order to make this maximum profit?

A shopkeeper charges Rs. 25 per item for buying 20 or less items. He gives some rebate if items bought are more. If the items bought are 50 or less, then a rebate of Re. 1 per item and for purchase of more than 50 items, rebate of Rs. 2 per item. Find the cost function. What are the points at which this is not continuous?

What is meant by system? Describe, with an example, how classroom instruction can be designed and developed using systems approach to instruction.

Explain the meaning and types of learning environment. Discuss, with examples, how technology plays a significant role in each of these learning environments.

Define Educational Technology. Describe how educational Technology has evolved to support the various kinds of learning.

Select a topic, which you would like to teach using the video programme. Write a script and story board for the video programme.

What do you mean by learning design? Explain with an example.

Describe any two means of delivering online instructions.

How will you organise and manage a technology mediated learning space? Give your ideas and plans.

Discuss the technologies/tools used for assessment of learners.

What is meant by Open Educational Resources (OERS)? Explain the different types of OERs and creative common licenses.

Choose a topic from your subject. Write how you will plan and transact a lesson keeping in mind the principles of Universal Design Learning (UDL). Give suitable examples.

With the help of suitable examples, explain uses of ICT in inclusive classrooms at secondary school level.

What do you understand by cyberbullying and cyber harassment? Discuss how we can become vigilant for online predators?

Describe the process of developing and delivering distance education programmes followed by Indira Gandhi National Open University (IGNOU).