Puzzles

1.A Man sell 2 cows for Rs.210. He sells 1 cow for a profit of 10% and another cow for a loss of 10%. Totally he got profit of 5%. find cost of each cow.

2.A box contains white sox and black sox.you know that the least number of sox that should be taken for a sure pair of same color is same as the least number of sox that should be taken for a sure pair of different color.what is the number of sox in the box if there's no difference between left and right sox?

3.My watch is 2mts/hr slow and my husband watch is 1mt/hr fast we went together to a marriage but late. we had a difference of 1 hr. find the number of hours elapsed from the time we set the 2 clocks correctly 
till now.

4.'A' says if seventy five chickens are sold from what we have now the the feed will last for extra 20 days but 'B' says if we buy additional 100 chickens then feed will get over 15 days earlier. find the no. of 
chickens both r hving now?

5.A ,B ,c are friends they went by cycle and wearing a hat of 1 frnd & riding cycle of another.
A is wearing C's hat find who is riding a's cycle.

ans: C
if A is wearing c's hat then it will be riding b's cycle.
if so B will be wearing A's hat no other way since A's wearing c's hat
and riding c's cycle. then remaining c will be wearing b's hat and 
riding
A's cycle.

6. A problem on train's speed & distance between 2 stns.i cudn't solve it , dont remember also

7. An 8 marks problem, George Summers type...4 frnds go 4 a picnic preparing salad of 3 different fruits, no one uses same combination of fruits as the other, all 4 belong to different families. 5 conditions 
were given & finally 4 questions were asked on which family some belong, n which fruits r used etc.....can b solved 

8. another 6 marks, George Summers type prob....3 pairs of people, with strange names...Patsya, misha, kotsya & so on....we were asked 2 match their 1st names with last names based on conditions given n work they do

9. George Summers again.....few statements...only 1 is true, which 1....n based on tht which day of the week is it
A. Sunday, statement of Dummie (D) was rightI am not able 2 recollect the left out problem, but it was simple. 
Someone plz post the answers if able 2...i'm not sure of the answers English was simple....basic grammar...go thru barron's Also, needed 2 ask 1 thing, does Infosys recruit people who r hving their aggregate below 60, mine is 54...