Doubts!Plz help

[Aranya]

DSE - 2010 No. 18,20,33,43-46,55-57 DSE- 2012 No.26,39,44,45,46 Please someone help!

[The Villain]

@Aranya
2012
q26 We know
Gini ceoff=(1/2n^2 mean) sigma ninj(mutual differences)yi-yj
           
here n1=1/2 and n2=1/2
mean is 200+100 divided by 2=150

subs in above formula
(1/2*1^2*150)(1/4(200-100)+1/4(200-100))
=1/6

Q45 just plot the sets...u'll get U as convex

[Aranya]

Thanks. Plz help for the other qsns!

[kangkan]

please mention the question paper series...we all have diffrnt series...the question numbers might not match

[Aranya]

2010 series 02 and 2012 series 01

[mrittik]

Q20. Its a problem of Arbitrage....so very easily you find out one thing: 5s1-s2=3 & s1+s2=1...solving both eqns you get s1=2/3,s2=1/3.....for the next one 3s1+0.s2=3*2/3=2.

[Aranya]

Thanks @mrittik

[mrittik]

Q33. If the person 1 lexicographically prefers y to x...then getting his endowment bundle, he doesn't interested to trade with other...so the price of Py will be quite higher than the Px which is easily trade-able.....px/py<=1.

Q43. Ls=Ld when market is clear...-a +d.b=b=>b=a/d-1=>b>a/d
44.Not sure


55. d 56. Z 57. X

[Aranya]

@mrittik but how to solve 55-57 ?

[mrittik]

think a bit...you own are able to get the point....please