JNU ECOM 2011 QUES 47-56

Posted by Arushi :)) on Mar 23, 2014; 3:53pm
URL: http://discussion-forum.276.s1.nabble.com/JNU-ECOM-2011-QUES-47-56-tp7585392.html

QUES 47
If the marginal cost of producing 4th unit is greater than the marginal cost of producing 3rd unit, then it follows that:
a) the average cost of producing 4 units must be greater than the average cost of producing 3 units
b) the average cost of producing 4 units must be less than the average cost of producing 3 units
c) the average cost of producing 4 units must be equal to the average cost of producing 3 units
d) None of the above
Answer-d
QUES 48

Answer-d
QUES 49

Answer-
QUES 50

Answer-c
QUES 51
Suppose the price elasticity of demand for good X is 0.2 If the price of X rises by 2.8%, what effect will it have on the total expenditure on good X?
a) Expenditure on X will fall by 5.6%
b) Expenditure on X will rise by 5.6%
c) Expenditure on X will rise by 2.2%
d) Expenditure on X will fall by 2.2%
Answer-c
QUES 52

Answer-c
QUES 53
The probability distribution of a random variable X is given in the table below:

The mean and variance of X are respectively:
a) 2;2
b) 2; 1.4142
c) 1.37; 1.2731
d) None of the above
Answer-c
QUES 54
In a certain country telephone numbers have 8 digits. The first two digits are the area code and are the same within a given area. The last 6 digits are the local number and cannot begin with 0. How many different telephone numbers are possible within a given area code in this country?
a) (10)^6
b) 9^6
c) 900000
d) None of the above
Answer-c
QUES 55

Answer-d
QUES 56

Answer-b