Puzzles to test your retaining and stress bearing ability

These kind of puzzles are mostly asked (asked in Microsoft)to test the stress level and attitude , you r not supposed to answer correctly but you must not let them feel that you are exhausted and not able to take challenge. you must try to find out all the possible ways , even if it is not correct. try out first and mail me at p4p.click@gmail.com if u r unable after giving your best effort.

1. Ali Baba had four sons, to whom he bequeathed his 39 camels, with the proviso that the legacy be divided in the following way : The oldest son was to receive one half the property, the next a quarter, the third an eighth and the youngest one tenth. The four brothers were at a loss as how to divide the inheritance among themselves without cutting up a camel, until a stranger appeared upon the scene. Dismounting from his camel, he asked if he might help, for he knew just what to do. The brothers gratefully accepted his offer. Adding his own camel to Ali Baba's 39, he divided the 40 as per the will. The oldest son received 20, the next 10, the third 5 and the youngest 4. One camel remained : this was his, which he mounted and rode away. Scratching their heads in amazement, they started calculating. The oldest thought : is not 20 greater than the half of 39? Someone must have received less than his proper share ! But each brother discovered that he had received more than his due. How is it possible?

2. Adam, Burzin, Clark and Edmund each live in an apartment. Their apartments are arranged in a row numbered 1 to 4 from left to right. Also, one of them is the landlord. If Clark's apartment is not next to Burzin's apartment, then the landlord is Adam and lives in apartment 1. If Adam's apartment is right of Clark's apartment, then the landlord is Edmund and lives in apartment 4. If Burzin's apartment is not next to Edmund's apartment, then the landlord is Clark and lives in apartment 3. If Edmund's apartment is right of Adam's apartment, then the landlord is Burzin and lives in apartment 2.Who is the landlord?

3. A man is going to an Antique Car auction. All purchases must be paid for in cash. He goes to the bank and draws out $25,000.Since the man does not want to be seen carrying that much money, he places it in 15 evelopes numbered 1 through 15. Each envelope contains the least number of bills possible of any available US currency (i.e. no two tens in place of a twenty).At the auction he makes a successful bid of $8322 for a car. He hands the auctioneer envelopes number(s) 2, 8, and 14. After opening the envelopes the auctioneer finds exactly the right amount.How many ones did the auctioneer find in the envelopes?