Difficulty Popularity

Six men, namely Martin Freeman, Jonah Jameson, Terry Singer, Mike Cooper, Jim Condon, and Sylvian Bogard were in an elevator together.

Unexpectedly, the lights went out. When the lights came back, Martin Freeman's wallet was missing which contained a confidential item.

Detectives were called at the scene. They interrogated the suspects, the witnesses, and people who were familiar with the suspects. They collected physical evidence (hair samples, fiber samples, etc.) from the crime scene as well. Overall, they were able to collect fifteen clues, but they could still not find the culprit.

Then as the last resort they dialed a phone number that connected to 221B Baker Street and Sherlock Holmes was appointed on the case. Following are the clues reading which he was able to deduce the culprit within a couple of minutes.

1) No two suspects have the same weight, color shoes, color umbrella, color car, or hair color.

1) The suspect who owns a pink car was wearing tan shoes.

3) The suspect who weighs 180 pounds owns an orange car.

4) Terry Singer owns an orange car.

5) The suspect who owns a blue car was wearing purple shoes.

6) The suspect who weighs 150 pounds was wearing tan shoes.

7) Mike Cooper was carrying a pink umbrella.

8) Sylvian Bogard has black hair.

9) Jonah Jameson weighs 210 pounds.

10) The suspect who weighs 190 pounds was wearing purple shoes.

11) The suspect who was carrying a black umbrella is not the one who was wearing blue shoes.

12) The thief owns a blue car.

13) The suspect who owns a white car is not the one who weighs 170 pounds.

14) Jim Condon was wearing brown shoes.

15) The suspect who weighs 190 pounds is not the one who has black hair.

Can you find the culprit too?

Unexpectedly, the lights went out. When the lights came back, Martin Freeman's wallet was missing which contained a confidential item.

Detectives were called at the scene. They interrogated the suspects, the witnesses, and people who were familiar with the suspects. They collected physical evidence (hair samples, fiber samples, etc.) from the crime scene as well. Overall, they were able to collect fifteen clues, but they could still not find the culprit.

Then as the last resort they dialed a phone number that connected to 221B Baker Street and Sherlock Holmes was appointed on the case. Following are the clues reading which he was able to deduce the culprit within a couple of minutes.

1) No two suspects have the same weight, color shoes, color umbrella, color car, or hair color.

1) The suspect who owns a pink car was wearing tan shoes.

3) The suspect who weighs 180 pounds owns an orange car.

4) Terry Singer owns an orange car.

5) The suspect who owns a blue car was wearing purple shoes.

6) The suspect who weighs 150 pounds was wearing tan shoes.

7) Mike Cooper was carrying a pink umbrella.

8) Sylvian Bogard has black hair.

9) Jonah Jameson weighs 210 pounds.

10) The suspect who weighs 190 pounds was wearing purple shoes.

11) The suspect who was carrying a black umbrella is not the one who was wearing blue shoes.

12) The thief owns a blue car.

13) The suspect who owns a white car is not the one who weighs 170 pounds.

14) Jim Condon was wearing brown shoes.

15) The suspect who weighs 190 pounds is not the one who has black hair.

Can you find the culprit too?

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Difficulty Popularity

You live in Dubai and had an infinite supply of oil and a 5 liters and 3 liters jar,

how would you measure exactly 4 liters (of-course in minimum numbers of step) ?

how would you measure exactly 4 liters (of-course in minimum numbers of step) ?

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Difficulty Popularity

You are given a set of scales and 12 marbles. The scales are of the old balance variety. That is, a small dish hangs from each end of a rod that is balanced in the middle. The device enables you to conclude either that the contents of the dishes weigh the same or that the dish that falls lower has heavier contents than the other.

The 12 marbles appear to be identical. In fact, 11 of them are identical, and one is of a different weight. Your task is to identify the unusual marble and discard it. You are allowed to use the scales three times if you wish, but no more.

Note that the unusual marble may be heavier or lighter than the others. You are asked to both identify it and determine whether it is heavy or light.
**category** :
LOGIC

The 12 marbles appear to be identical. In fact, 11 of them are identical, and one is of a different weight. Your task is to identify the unusual marble and discard it. You are allowed to use the scales three times if you wish, but no more.

Note that the unusual marble may be heavier or lighter than the others. You are asked to both identify it and determine whether it is heavy or light.

Difficulty Popularity

Difficulty Popularity

I can prove why 1 = 2

Step1. Lets say y = x

Step2. Multiply through by x xy = x2

Step3. Subtract y2 from each side xy - y2 = x2 - y2

Step4. Factor each side y(x-y) = (x+y)(x-y)

Step5. Divide both sides by (x-y) y = x+y

Step6. Divide both sides by y y/y = x/y + y/y

Step7. And so... 1 = x/y + 1

Step8. Since x=y, x/y = 1 1 = 1 + 1

Step9. And so... 1 = 2

How is this possible ?

Step1. Lets say y = x

Step2. Multiply through by x xy = x2

Step3. Subtract y2 from each side xy - y2 = x2 - y2

Step4. Factor each side y(x-y) = (x+y)(x-y)

Step5. Divide both sides by (x-y) y = x+y

Step6. Divide both sides by y y/y = x/y + y/y

Step7. And so... 1 = x/y + 1

Step8. Since x=y, x/y = 1 1 = 1 + 1

Step9. And so... 1 = 2

How is this possible ?

Difficulty Popularity

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?
**category** :
LOGIC

Difficulty Popularity

In a closed jar, there are three strawberry candies, two mango candies and five pineapple candies. You can't see inside the jar. Now, how many toffees you must take out from the jar to make sure that you have one of each flavor?
**category** :
LOGIC

Difficulty Popularity

Jonathan has three boxes containing milk chocolates and dark chocolates. The problem is that all of them have been labeled incorrectly as follows.

Box1: Dark Chocolates

Box2: Milk Chocolates

Box3: Dark Chocolates and Milk Chocolates

How will he label all the boxes correctly by just opening one box?
**category** :
LOGIC

Box1: Dark Chocolates

Box2: Milk Chocolates

Box3: Dark Chocolates and Milk Chocolates

How will he label all the boxes correctly by just opening one box?

Difficulty Popularity

A claustrophobic person boards a train that is just about to enter a tunnel.

Which place will be the best for him to sit?

Which place will be the best for him to sit?

Difficulty Popularity

You have been given three jars of 3 liters, 5 liters and 8 liters capacity out of which the 8 liters jar is filled completely with water. Now you have to use these three jars to divide the water into two parts of 4 liters each.

How can you do it making the least amount of transfers?
**category** :
LOGIC

How can you do it making the least amount of transfers?

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