00:00A few days later...
00:07Hello dear friends, do you feel like your brain needs action?
00:11We have exactly what you need.
00:13Concentrate and try to prove that you are the best detectives there is.
00:25A young lady had two admirers.
00:28One day, she needed money.
00:30But the two men told her that they were not ready to give her any.
00:33At the same time, these two gentlemen promised her to buy her anything she wanted.
00:38How did the young woman get out of this situation?
00:50The woman took her first lover to a clothing store where she chose an expensive coat.
00:55The man paid, and they both left.
00:58The next day, the woman came back to the same place with her second admirer and bought the same coat.
01:04The third time, she went to the store alone to return one of her purchases.
01:09And that's the job.
01:10None of her admirers would have suspected that she had returned her gift.
01:14And she now had the money she needed.
01:18Two girls, Suzanne and Gabrielle, distinguished themselves from other people.
01:22They always told only the truth.
01:24Except on their birthday.
01:26On their birthday, the girls only told lies.
01:29One fine day, on June 15, each of the girls was asked about the date of her birthday.
01:34Suzanne replied that her birthday was the day before.
01:37Gabrielle replied that her birthday would be the next day.
01:40The next day, the girls again asked the same question.
01:44The next day, the girls again asked the same question.
01:47And, strangely, they answered the same thing.
01:50Try to find out when are Suzanne and Gabrielle's birthdays?
02:02Suzanne answered yesterday twice in a row.
02:05So she lied once and told the truth once.
02:08Which means that one of these days is her birthday.
02:11Let's suppose that Suzanne's birthday is June 15.
02:14That day, she lied by answering yesterday.
02:17And the next day, she told the truth by answering yesterday.
02:21Likewise, on June 15, Gabrielle told the truth by answering that her birthday was the next day.
02:27The day of her birthday, June 16, she lied again by answering tomorrow.
02:32Thus, Suzanne's birthday is June 15.
02:35And Gabrielle has her birthday on June 16.
02:42In a grocery store, Claudia and her husband Jackie met Léon.
02:46Who, strangely, was the grandfather of the wife of his sister's stepmother's only son.
02:52Yes, I know, it's a lot.
02:54Who is Léon for Claudia and Jackie?
03:06Léon is Claudia's grandfather.
03:08And moreover, he is Jackie's stepmother's father.
03:16Melissa welcomed the guests who arrived at her birthday party.
03:20Catherine arrived before Bob, Aaron, after Raymond.
03:24Bob arrived before Raymond, and Timothée arrived after Aaron.
03:28Which guest arrived last?
03:39Timothée was the last to arrive.
03:45Three boys, David, Bernard and Sam, are friends with three girls.
03:50Valerie, Paulette and Olivia.
03:53Soon, the group divides into pairs because it turns out that Paulette does not like to play tennis.
03:58David is Valerie's brother, and he often goes to tennis classes with his girlfriend.
04:04Bernard invites David's sister to a date.
04:07Who does Sam spend time with?
04:19Sam spends a moment with Paulette.
04:25You want to send a valuable item to a friend.
04:28You have a box that is larger than the object itself, and you have several locks with keys.
04:33The box has a ring large enough for several locks.
04:37But your friend does not have the keys to your locks.
04:39What should you do, knowing that you cannot send the key in an unlocked box, because it could be copied?
04:55Place the object in the box and close it with a lock.
04:58Send the box to your friend.
05:00The friend closes the box with his own lock and returns it to you.
05:04You open your lock and return the box to your friend.
05:08All he has to do is unlock his own lock.
05:16At school, in one of the classes, there were four pairs of twins.
05:20One day, all the students went to a school event with their parents,
05:24and it turned out that there were 85 people in total.
05:27How many students are there in the class?
05:39Since each pair of twins is very likely to have different parents,
05:42then four pairs of twins and their parents represent 16 people.
05:46The remaining 69 people are ordinary students with their parents.
05:5185, 16, 69.
05:54Each of the non-twin students has two parents,
05:56so the number of non-twin students is 69, 3, 23 students.
06:00Thus, in total, there are 23 plus 8, 31 students in the class.
06:09Welcome to our show.
06:11Before the break, Mr. Sanders here has reached our grand final.
06:15How do you feel, Mr. Sanders?
06:17Nervous? Good.
06:19Now, to win our grand prize of one million euros,
06:22all you have to do is name 100 words that do not contain the letter B in 90 seconds.
06:28Start the timer.
06:30Can you help Mr. Sanders to win the grand prize?
06:43He just has to start counting very quickly from 1 to 100.
06:46Look. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12.
06:56There is no letter B in any of these numbers.
06:59Check for yourself.
07:03Now, here is a rather delicate riddle,
07:05but we believe in your logical reasoning skills.
07:08You can easily carve an 8x8 chessboard with 32 tiles of 2x1.
07:14This means that you can place these 32 tiles on the board and cover each square.
07:19But if you remove two opposite corners of the chessboard,
07:22it will become impossible to carve this new 62-square board.
07:27Can you explain why it is no longer possible to carve this board?
07:31The answer is B.
07:39Let's color our chessboard by alternating with red and blue squares.
07:43Then we have to color all your tiles.
07:46Half of each tile must be red and the other half must be blue.
07:50Every time you place a tile,
07:52you can always make sure that the red part of the tile is on a red square
07:56and the blue part of the tile on a blue square.
07:59Since you will need to place 31 tiles on the board to cover the 62 squares,
08:05you must be able to cover 31 red squares and 31 blue squares.
08:10But by removing the two corners, you remove 2 red squares,
08:13leaving 30 red squares and 32 blue squares.
08:17It is not possible to cover 30 red squares and 32 blue squares with 31 tiles,
08:22since these tiles can only cover 31 red squares and 31 blue squares
08:27and therefore it is no longer possible to carve this chessboard.
08:36Gaston agreed to take care of his friend's dog while it was absent.
08:40He fell in love with this adorable little Spitz,
08:43but Gaston's wife and children did not like the puppy at all.
08:46One evening, Gaston came home from work and discovered that the dog had disappeared.
08:51He called the police.
08:52When they arrived, they started by questioning Karine, Gaston's wife.
08:57She replied that she had slept all day.
09:00Then the police officer asked,
09:02and what were the children doing?
09:04They were playing in the garden.
09:05Then I told them to go home to do their homework.
09:08After that, the woman was accused of getting rid of the dog.
09:12How did the police officer understand that it was Karine?
09:24She claimed that she had slept all day.
09:26But then, how could she have told the children to go home?
09:33Stéphane called the police to report that his valuables had disappeared.
09:37When the police arrived, our man told them his story.
09:41I went camping alone.
09:42I had just arrived and set up my tent, when it started to rain heavily,
09:47so I hurried to find dry wood for the fire.
09:50I left my bag with my wallet and all my papers inside the tent.
09:54When I came back, everything had disappeared.
09:56The police officers did not believe Stéphane and locked him up for making a false report.
10:01How did they understand that the man was lying?
10:12Stéphane said he had set up the tent before it started to rain.
10:15But then, why is there a big puddle of water inside?
10:24To be continued...
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