Top 5 Situation Puzzles And Answer | Best Riddles and Brain Teasers

#1441 - Conditional Probabitlity Riddle Google Interview

A mathematics teacher took exam of his students. Out of the total students, 25% of the students passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passes the first test and also passed the second test ?

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60%

Explanation:
This type of questions call in for the application of conditional probability as the question is asking you to find out the probability that the second test was passed with the given situation that the first one was passed.

The formula for conditional probability:
P (Second/First) = P (First and Second)/ P (First)
= 0.25/0.42
=0.60
=60%

#1442 - Directi Interview Logic Aptitude Puzzle

On a certain island, people are gifted with assorted eye colors. There are a hundred green colored and a hundred grey colored pair of eyes. On that island, there is no mirror available. Thus no one knows the eye color of their own. They could have asked each other but that is prohibited. They are not allowed to converse with each other. However, they can study and analyze other's eyes. They don't even know the statistics and so it is believable to them that their eyes can be blue as well. There is a chance of freedom from the island. If anyone is able to guess the color of his own eyes correctly, he will be set free and can leave the island.

On one particular day, an outsider comes to the island and makes an announcement that he has seen someone with grey color eyes. What will happen now?

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If there is only one person with grey colored eyes, he will see all other people and find out that no one has grey eyes. Thus he will come to know that he himself has grey eyes. Thus, he will leave the island that very day.

If there are two people with grey eyes, they will find only one pair of grey eyes and will think that that is the person with grey eyes. So they both won't leave the island. On the next day however, they will see that no one left the island and they will understand that both of them has the same eye color that is grey color.

Now through induction, since there are 100 people with grey eyes, all of them will leave the island on the 100th day after the announcement was made by the outsider.

#1443 - Who am I Riddle For Children

Buy me, smell me or deliver me, I donquot;t change.

Who am I?

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Cent, Scent and Sent.

#1444 - Picture Puzzle Brain Teaser

Can you count the number of pencils in the picture below ?

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72(18*4)

#1445 - 13 Floor Funny Riddle

Why do you find that most of the buildings are deprived of the 13th floor?

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Because most of the buildings are not that tall enough.

#1446 - How Many Triangles Puzzle

How many triangles can you count in the figure given ?

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38

Let us begin by counting the smallest triangles assuming that they are 1 unit in side. You can find 12 triangles facing upwards (3 + 4 + 3 + 2) and 12 triangles facing downwards.

Now move to the bigger triangle with say side of 2 units. You can find 6 upward facing triangles (3 + 2 + 1) and 6 downward facing triangles.

Next are the biggest triangles with side 3 units (assumingly). You can find 1 upward facing triangle and 1 downward facing triangle.

12 + 12 + 6 + 6 + 1 + 1 = 38

#1447 - Popular Number Puzzle

You ask your friend to pick a random number and you have to make five guesses in order to find the number. You write all your guessed numbers on a paper and the differences between the guessed number and the picked number is written on another paper.

After that, one number is erased from each of the paper. Now there are only four numbers on each paper:

Guesses: 27, 32, 44, 45
Differences: 5, 7, 10, 13

Can you find out what is the number?

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37

The number is 37.
The missing guess can be either 24 or 50 and the missing difference is 8.

#1448 - Critical Thinking Riddle

Bill bought a new car. He has a habit of eating ice cream from a particular ice cream shop while returning home from office. Whenever, he eats strawberry ice cream, he faces no problem. But whenever, he eats chocolate ice cream, the car starts giving problem. At first, he thinks, it is just a co-incidence but when this awkward incident happens for 3-4 times, he reports this problem to the company.

The mechanic of the company checks but finds no problem at all. The next day, when he stops by to eat chocolate ice cream, the car again starts giving problem.

Can you find the possible reason?

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This is because the queue for the chocolate ice cream is very long. Thus, the engine gets cold and becomes troublesome. While the queue for strawberry ice cream is short.

#1449 - Fun Quick Riddle

Ok before we begin with the puzzle, do keep in mind that you have to answer it quickly.

You are participating in a car race. Seeking the perfect moment, you overtake the second person in the race. What positions are you in now?

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If you answered first you are wrong. You are the second one as you overtook the second person and took his place.

#1450 - Whatsapp Website Names Riddles

This one is a popular quiz/puzzle among the whatsapp users. Can you find out the name of the websites depicted using the emojis of whatsapp in this picture ?

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1. Facebook
2. Skype
3. Four Square
4. Google +
5. Yahoo
6. Youtube
7. Book my show
8. Ibibo
9. Hotmail
10. Wikipedia