jnu 2010

[sweta]

hey can any1 solve this out?

Y= C+I
I=1000
C= f(Yd)
if Yd = 0, then C=500
MPS= 30%
suppose govt. collects a direct tax revenue equal to 15% of Y & makes TR of 750 units of money per year

1. what is d value of investment multiplier in d economy
2. eq. level of Y.
3. If instead of 750 units of money, govt. makes annual TR of 10%, then d value of investment multiplier.

[aditi5000]

Hi Sweta
y = 500 + .7 (.85 Y +750) +1000
   = 1500 + .595 Y +525
   = 2025 / 0.405 = 5000
Inv multplier = 1/  0.405  = option c
eqb level of incom - option d

If instead of 750 units of money, govt. makes annual TR of 10%, then d value of investment multiplier
inv multiplier = 1 / 0.335 = 2.98 option d
y = 500 + .7 (.85 Y +.10 y) +1000
   = 1500 + .665 y
y * = 1500 / 0.335
 Does this make sense according to you.. I am also very unsure...

[Chocolate Frog]

Yes, except that the correct options for the last two questions should be (c) - increases by less than unity, and (a) - decreases by less than 1000, respectively.

[ritu]

yes aditi same answers for  first two parts and same as chocolate frog's answers, for last two...:)

[aditi5000]

Hey how did you get the last two answers as C and D? isn't the multiplier 1/0.335 which is approx. =3 ?

[AJ]

Can someone pls conform these answers..??

Jnu 2010...

1. A
2. B
3. B
4. ..
5. B
6. A
7. B
8. A
9. B
10. D
11. B
12. B
13. C
14. B
15. D
16. A
17. C
18. B
19. B
20. A
21. A
22. C
23. A
24. B
25. C
26. B
27. D
28. B
29. C
30. C
31. D
32. B
33. B
34. C
35. A
36. C
37. D
38. B
39. B
40. D

[Mr. Nobody]

CONTENTS DELETED

The author has deleted this message.

[AJ]

39.. can be anything...i guess... I mean why we even have this question here...

and 33. ... I am not sure if it's correct but this is what i did...

every X has 5 elements..
and there are 20 such sets...

so,if we just say that these were disjoint.. then there union will have 20*5= 100 elements...

but we are given that every element of union belongs to 10 of the X's .... so that means that union infact has ... 100/10 = 10 elements...

now, coming to Y..

similarly, here union has .. 2*n/4 = n/2 elements...

now both are equal.. that means...  n/2=10 ... so n=20 ..

Does it makes sense..??

[AJ]

@ RAM

And except for 33, 39 ... are remaining answers same..??
Please tally these ones too...

41. C
42. ...
43. A
44. B
45. B
46. B
47. C
48. D
49. B
50. B
51. B
52. C
53. A
54. D
55. A
56. B
57. D
58. C
59. D
60. C
61. A
62. C
63. A
64. A
65. B
66. D
67. C
68. D
69. A
70. C
71. D
72. D
73. ...
74. B
75. B
76. ...
77. C
78. A
79. A
80. D
81. ...
82. ...
83. A
84. D
85. A
86. B
87. D
88. A
89. D
90. ...
91. ...
92. ...
93. ...
94. A
95. A
96. A
97. A
98. D
99. C
100. B

[aastha]

@ aj

for 4 its b ..

14th is c as at this level the loss is minimized ..

20 is d

39  is a ..

[aditi5000]

39

the number 0.9999999 ... is
a. exactly equal to 1
b. slightly less than 1
c. slightly more than 1
d. between 0.99 and 0.999

How is the answer a? Are we rounding off? Why not b?

[aditi5000]

AJ, hey how did you do question 55? Is there a formula to be used?

[aditi5000]

q 33

The question says that union X = S = union Y so they two collections of sets need to have the same number of elements in order to be equal naa??
5* 20 = 100
and every Yj contains 2 elements so 2n = 100 ie n = 50 ---option D

[aditi5000]

Hi Ritu and Chocolate Frog, can you please solve the last two parts or point out my mistake ... I am not getting the same answers as you ... Q 60 and 61 please..

[AJ]

@aastha
~14th..yup my mistake...

~Why 39 is a.. i mean 0.9999999 is not 1 .. right.. ???


~20th.... its.. price decreasing and income increasing... bundle will change..

@aditi..
for q.no. 33
I don't know...

for 55.. I tried solving from the answers... only for income at 1000.. the remaining things given in question are satisfied....

[Mr. Nobody]

CONTENTS DELETED

The author has deleted this message.

[aastha]

@ Aj
 

for q 20
since x and y are available only in discrete units the consumer wont be able to increase his consumption in discrete amount due to a fall in price and inc in income .....so option should be d.....

for 39

 0.99999999...... =0.9 + 0.09 +0.009 + ...........
so its an infinte GP with a =0.9 and r = .1
so applying the Gp formula which is Sn= a/1-r
                                                    =.9/1-0.1 =.9/.9 = 1
 so ans is option a .....
i hope it helped !!!!!
 

[AJ]

@aastha...

OHHHHHHH....I dint saw 20th was related to 19th... Sorry!

and interesting for 39... I dont even think this much while doing paper.. for me its like "ofcourse its slightly less than one" .. :/ ... atleast now I know why we have this question..!!!!

[aditi5000]

Oh...Thank you I got it now!! :)

Q35 - even I got 0.5 but where did you get the minus sign from? I got option c

Q41 - its answer a .. not c (c is not a function because the height 150 cms may go back in the domain to more than 1 person)

and interest rate is a flow.. check wiki.

Someone please solve q 61 and 60...

[AJ]

for 77.... Sorry.. I got wrong answer....

and I am still not getting 33.. what is meaning of this second line.. ? if each element of s belongs to exactly 10 of the X's ...............

????