SUPPOSE THERE IS ONLY ONE BARBER SHOP IN YOUR TOWN AND IT EMPLOYS TWO BARBERS ONE BARBERS HAS A NICE NEATLY TRIMMED HEAD RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

This problem can be best solved using the pigeonhole principle.

The argument will go like this:
Assume that all the non-bald people in NYC have different number of hairs on their head. The population is about 9 million and let us assume that there are 8 million among them who are not bald.

Now, those 8 million people need to have different number of hairs. On an average, people have just 100, 000 hairs on their head. If we keep on assuming that there is someone with just one hair, someone with two, someone with three and so on, there will be 7, 900, 00 other people left who will have more than 100, 000 hairs on their head and need different number of hairs.

Now, as per this assumption, if we keep increasing one hair for each person, to make everybody hair different in numbers, we will come across someone with 8, 000, 000 hairs. But that is practically impossible (even 1, 000, 000 is impossible). Thus there must be two people who are having same number of hairs. Did you answer this riddle correctly?
YES  NO  

Statue of Liberty Did you answer this riddle correctly?
YES  NO  

A map. Did you answer this riddle correctly?
YES  NO  

Time. Iron, steel, stone and virtually any substance will be worn down given enough time. Did you answer this riddle correctly?
YES  NO  

None! He doesn't own a PLUM tree... he owns a PEAR trear! Did you answer this riddle correctly?
YES  NO  

A riddle. Did you answer this riddle correctly?
YES  NO  

The code is "different." The clerk told him this. Did you answer this riddle correctly?
YES  NO  

The number of Ostriches = 60 & The number of Zebras = 20 Did you answer this riddle correctly?
YES  NO  

England Did you answer this riddle correctly?
YES  NO  

If the man killed himself, he would not have been able to rewind the cassette. Thus it is clear someone else killed him. Did you answer this riddle correctly?
YES  NO  

Grumpy Did you answer this riddle correctly?
YES  NO  

America and England have different ways of numbering floors. In America, it goes 1st floor, 2nd floor, 3rd floor. In England, it goes ground floor, 1st floor, 2nd floor. Did you answer this riddle correctly?
YES  NO  

The third man. This is because he knows there are only two of each color cap. If the man behind him (the fourth man) saw two caps that were the same color in front of him, he would know that his own must be the opposite. However, because the caps alternate in color. The fourth man has only a 50% chance of getting his hat color correct, so therefore he stays quiet. The third man realizes that the fourth man is quiet because he must not see two caps of the same color in front of him, otherwise the fourth man would say the opposite of the caps in front of him. Therefore, the third man presumes his own cap must be the opposite of the mans in front of him, and his presumption is correct. Under this same logic, after the third man speaks his color hat, the second man, even though he sees only wall, would be the next to go free, because he knows his cap must be the opposite of whichever color the third mans cap was. Did you answer this riddle correctly?
YES  NO  

If the man had committed suicide, the window that he jumped from should have been left opened. But all the windows facing the dead body were closed. This means that someone closed the window after the man died. Did you answer this riddle correctly?
YES  NO  

19... Explanation:
The children can purchase 19 chocolates in return.

Out of 77 wrappers, 75 will be used to buy 15 chocolates and two will be left spare.
The 15 chocolates will create 15 empty wrappers that can be exchanged to get three chocolates.
Three chocolates will return three wrappers which will help them buy another chocolate.
Now the wrapper from this chocolate and the two spare that were left earlier will get them another chocolate. 15 + 3 + 1 = 19 Did you answer this riddle correctly?
YES  NO