Showing posts with label hard. Show all posts
Showing posts with label hard. Show all posts

Monday, June 26, 2017

Murder Mystery #2





Upon reaching each room, he found out that the window facing the dead body was closed. He had to open the window himself. This tells that there was somebody else with him who closed the window. If he would have committed suicide, at least one window would have been open.

Thursday, January 5, 2017

The viral donkey riddle. 90% CAN'T SOLVE IT




If you look at the following riddle, it seems clear and easy. But I can almost guarantee you, that your first answer will be wrong!


The first time the man bought a donkey for 50$, so he has an effective cash of -50$

He then sold it for 60$, which means that his effective cash is now +10$ (-50$ + 60$)

He buys the next donkey for 70$ bringing his effective cash down to -60$ (+10$ - 70$)

When he finally sells the second donkey, he get's back 80$, which brings his effective cash to 20$ (-60$ +80$)

In the end he made 20$.

Tuesday, December 6, 2016

Test: 80% fail on this Common Sense Test



In this video we are going to test your common sense. 80% usually fail. Will you belong to the rest? If so, please share your experience in the comments. And no spoilers please!


The answer is 1. As you can clearly see in the first line of the equation.

Friday, December 11, 2015

#38 Suicide Note



A suicide note was left, but was it really a suicide? Or is there more? Help to solve the mystery.


If he comitted suicide, then how could he rewind the tape?

Monday, September 7, 2015

#35 Cake Problems






Imagine, its your birthday. You have one cake and are only allowed to do 4 straight cuts. Its not allowed to stack or move the cake. Also the pieces don't happen to have the same sice. In how much pieces can you divide the cake?



You can divide the cake in 11 pieces. Here is an example:



Tuesday, July 21, 2015

Test: Are you observant?


Are you observant? Find out with this test.

Most people won't get the right number. Even after trying again!

Tuesday, July 14, 2015

#33 Half full or half empty?




Same ol' question. But this time you need to measure it!



Since the glass is quadratic, you can just tilt it.



Wednesday, April 1, 2015

#29 Bridge Problems





Actually, there is no solution for this problem. It's only an april fool :) Check out this wiki article if you want to know, why there is no solution.

Monday, March 30, 2015

#28 The missing piece - A magic triangle




Actually, neither of the 13×5 "triangles" is truly a triangle.Its only an optical illusion. For a more detailed solution check out this wiki article.

Friday, March 27, 2015

Todays Riddle.

Who makes it, has no need for it.
Who buys it, has no use for it.
Who uses it, can neither see nor fell it.
What is it?


The answer is "a coffin".

Sunday, March 22, 2015

Tuesday, March 17, 2015

#25 The last will





The sons borrowed a cow. Now the oldest son took the half, which equals 9 cows. The second son took a third, which equals 6 cows and the youngest son took 2 cows, which equals a ninth.

9 + 6 + 2 = 17 so that the sons could easily return the borrowed cow.

Saturday, January 31, 2015

#18 Impossible Pill Riddle with solution!



Careful really hard riddle here!



Please not, that this is only a example. But with this technique you can find the pill wherever it is.

Step 1

 Take 6 random pills, divide them in 2 groups and weigh them. Now there are 2 possibilitys:

Possibility 1

Step 2a


The scale stays in balance.This tells us, that the pill we are looking for is either the pink one or the grey one.

Step 3a


Weigh both pills again...


and you have your solution.


Possibility 2

Step 2b

The scale gets out of balance on the first try. This tells us:

that the pill we are looking for must be on the left side.

Step 3b

Take any 2 pills out of the 3 pills from the left side (step 3a) and weigh them.

If the scale stays in balance, we have found the deadly pill we were looking for (The one we did not weigh)!

If the scale gets out of balance, we also found our pill. This time its the one on the left.


Saturday, January 17, 2015

Thursday, September 4, 2014

#14 Tomato Farmer



If you think, the solution to this one is easy, then you might be wrong.



At the start there are 99kg (99% of 100kg) water and 1kg (1% of 100kg) "other stuff". When the farmer arrived at the market, the percentage of water decreased to 98%. The weight of the "other stuff" stayed the same, but the percentage of the "other stuff" raised to 2% now. This means 2% = 1kg now and therefore 100% = 50kg. So the total weight of the tomatoes is 50kg now. This means, that 50kg water have evaporated.

Think of a card