What are the essentials of business letters?

What do you understand by written channel? Discuss its advantages and disadvantages.

What is meant by oral communication? Discuss its advantages and disadvantages. How can oral communication skills be improved?

What is meant by barriers to communication? Explain different types of intrapersonal barriers.

Variance and coefficient of variation

Absolute measures and relative measures of dispersion.

Correlation

Partition values

Why is matrix multiplication not commutative?

A businessman sells 2000 items per month at a price of Rs. 10 each. It is estimated that monthly sales will increase by 250 items for each Re. 0.25 reduction in price. Find the demand function corresponding to this estimate.

Find the effective discount rate when nominal rate of discount is 10% compounded continuously.

The total cost of a firm is C-1/3x³ - 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?

Sustainable Development.

Social Capital.