### #1 - I had 4 eggs Riddle

A thief gives me 3
My farm rooster lays 5 eggs
How many eggs do I have?

3

Explanation:
If I had 4 eggs -- Its just imagination.
A thief gives me 3 -- I go three eggs.
My farm rooster lays 5 eggs -- A Rooster can't lay eggs.

### #2 - Can you find the mistake in the image below

Spot the mistake in the below picture?

Wristwatches

Most of us must have assumed the answer to be a ring in the wrong finger but that's not the case as it's a normal ring. The error is in the watch. Wristwatches are manufactured with the adjustment pin always on the right side.

### #3 - Choose the right door Riddle

A famous treasure hunter was stuck at a cave with four doors.

Door-1: Filled with ice and anyone who enters the gate will be frozen to death in seconds.
Door-2: Two hungry sharks waiting for the prey
Door-3: Filled with the world's most poisonous gas.
Door-4: Filled with amplified glasses that magnify the power of the sun by 100 times and anyone who enters will be burnt in seconds.

How can he escape?

He can escape from the 4th door at night when the sun goes down.

### #4 - IQ Picture Riddle

By adding three letters, can you move image from

to

Image
http://www.briddles.com/images/riddles/IQ-TEST-BRIDDLES-.png
can be changed to
http://www.briddles.com/images/riddles/IQ-TEST-BRIDDLES-ANS.png

### #5 - 3 Cup Classic Lateral Thinking Puzzle

Below picture shows three empty cups. You need to put in your lateral thinking cap and place ten sugar cubes in three cups such that every cup contains an odd number of sugar cubes.
Can you do it?

Pour three sugar cubes on cup1 and cup3 and 4 sugar cubes on cup-2
Now,
Cup-1 got three sugar cubes.
Cup-3 got three sugar cubes.
Cup-2 got three seven cubes (3 of cup-1 and 4 of its own)

### #6 - Upsc Picture Series Puzzle

Can you solve below logical number series puzzle.

11.3135 + 9.3115+ 9.375

### #7 - NYC Hardest Logical Deduction Puzzle

You are hanging around in NYC when a person approaches you.

"Leaving the bald people aside, I can bet a hundred bucks that there are two people living in NYC who have same number of hairs on their heads," he says to you.

You say that you will take the bet. After talking to the man for a couple of minutes, you realize that you have lost the bet.

What did the person say to you that proved his statement ?

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.

### #8 - Civil Service Tricky Interview Question

A fresher was sitting in an interview. The interviewer said, "This is the last question of your interview. Tell me the accurate position of the center of this table where your resume is kept."

How can he answer this question? What will you have answered to such a question?

Put your finger confidently at a supposedly center point of the table and tell him that this is the exact center point.

The interviewer will ask, “How do you know this is the exact center?"

You can revert back that your last question was the previous question and thus you are not liable to answer further.

This is just a matter of being quick witted. The cleverer you are, the better the impression will be.

### #9 - Upsc Puzzle Question

The question that follows came in the UPSC final exam that was held in December 2013. Only one examinee i.e. Gaurav Agarwal was able to solve it. Can you solve it?

? + ? + ? + ? + ? = 30

You have to fill numbers in place of question marks. The numbers that you can use are 1, 3, 5, 7, 9, 11, 13 and 15. You can repeat the numbers if you like.

(15 - 9) + (13 - 7) + (7 - 1) + (9 - 1) + (13 - 9)

If you calculate it, you will get
6 + 6 + 6 + 8 + 4 = 30

### #10 - Hard Lateral Thinking Puzzle

Suppose we lay down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea.

Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee ?

The fact is that both the amounts are same.
After the swap has been done, you must know that the quantity of liquid is same in both the cups as you have taken and mixed a spoonful only in both the cases. So, there is no change in the quantity of the liquids.

No if there is any tea missing from the tea cup, it is now in the coffee cup. Also, since the quantity is same, then the same amount of coffee must be missing from the coffee cup and is now in the tea cup.