{"interactiveVideo":{"video":{"startScreenOptions":{"title":"Interactive Video","hideStartTitle":false},"textTracks":{"videoTrack":[{"label":"Subtitles","kind":"subtitles","srcLang":"en"}]},"files":[{"path":"https:\/\/youtu.be\/e8jfbtZLaeM","mime":"video\/YouTube","copyright":{"license":"U"}}]},"assets":{"interactions":[{"x":15.267175572519083,"y":18.099547511312217,"width":10,"height":10,"duration":{"from":180,"to":181},"libraryTitle":"Single Choice Set","action":{"library":"H5P.SingleChoiceSet 1.11","params":{"choices":[{"subContentId":"51ce0bbc-b535-4b80-b61f-0cd89a738e66","question":"

Is it better to change?<\/p>\n","answers":["

Yes<\/p>\n","

No<\/p>\n"]}],"overallFeedback":[{"from":0,"to":100,"feedback":"(this is a classical paradox: see\u00a0https:\/\/en.wikipedia.org\/wiki\/Monty_Hall_problem"}],"behaviour":{"autoContinue":true,"timeoutCorrect":2000,"timeoutWrong":3000,"soundEffectsEnabled":true,"enableRetry":true,"enableSolutionsButton":true,"passPercentage":100},"l10n":{"nextButtonLabel":"Next question","showSolutionButtonLabel":"Show solution","retryButtonLabel":"Retry","solutionViewTitle":"Solution list","correctText":"Correct!","incorrectText":"Incorrect!","muteButtonLabel":"Mute feedback sound","closeButtonLabel":"Close","slideOfTotal":"Slide :num of :total","scoreBarLabel":"You got :num out of :total points","solutionListQuestionNumber":"Question :num"}},"subContentId":"86af3dac-9ce3-43b7-b81f-d7e5352c327d","metadata":{"contentType":"Single Choice Set","license":"U","title":"Quizz"}},"pause":true,"displayType":"button","buttonOnMobile":false,"adaptivity":{"correct":{"allowOptOut":false,"message":""},"wrong":{"allowOptOut":false,"message":""},"requireCompletion":false},"label":"

Solve this quizz!<\/p>\n"},{"x":6.3613231552162848,"y":20.361990950226243,"width":10,"height":10,"duration":{"from":309.721,"to":310.721},"libraryTitle":"Text","action":{"library":"H5P.Text 1.1","params":{"text":"

There are three bottles, one of which contains a white liquid, one a black liquid, and the last is empty. All three bottles are marked at the middle to show where exactly half the liquid is. There is also an unlimited amount of water available. You must make a solution made up of 2 parts of the white liquid and 3 parts of the black liquid and 3 parts of water. You may throw out some of the liquid from the bottles, but you cannot get it back. The solution must also be exact, so you may only use the mark at the middle of the bottle, or the full bottle, as reference. In our many moves (filling or throwing out liquid counts as one) can you do so?<\/p>\n"},"subContentId":"76e64e7a-7b60-45ef-9373-307a3903abf5","metadata":{"contentType":"Text","license":"U","title":"Untitled Text"}},"pause":true,"displayType":"button","buttonOnMobile":false,"visuals":{"backgroundColor":"rgb(255, 255, 255)","boxShadow":true},"goto":{"url":{"protocol":"http:\/\/"},"visualize":false,"type":""},"label":"

The riddle<\/p>\n"},{"x":5.0890585241730282,"y":36.199095022624434,"width":10,"height":10,"duration":{"from":311.54700000000003,"to":312},"libraryTitle":"Single Choice Set","action":{"library":"H5P.SingleChoiceSet 1.11","params":{"choices":[{"subContentId":"9a1e5de0-50e9-47c0-8972-8471049dd6b3","question":"

How many moves?<\/p>\n","answers":["

8<\/p>\n","

10<\/p>\n","

3<\/p>\n","

5<\/p>\n"]},{"subContentId":"3698b2b0-3879-4b67-b8c9-79239cc5d9eb"}],"overallFeedback":[{"from":0,"to":100}],"behaviour":{"autoContinue":true,"timeoutCorrect":2000,"timeoutWrong":3000,"soundEffectsEnabled":true,"enableRetry":true,"enableSolutionsButton":true,"passPercentage":100},"l10n":{"nextButtonLabel":"Next question","showSolutionButtonLabel":"Show solution","retryButtonLabel":"Retry","solutionViewTitle":"Solution list","correctText":"Correct!","incorrectText":"Incorrect!","muteButtonLabel":"Mute feedback sound","closeButtonLabel":"Close","slideOfTotal":"Slide :num of :total","scoreBarLabel":"You got :num out of :total points","solutionListQuestionNumber":"Question :num"}},"subContentId":"03e9934b-09d5-45df-bc8f-08cfb633c009","metadata":{"contentType":"Single Choice Set","license":"U","title":"question chapter 2"}},"pause":true,"displayType":"button","buttonOnMobile":false,"adaptivity":{"correct":{"allowOptOut":false,"message":""},"wrong":{"allowOptOut":false,"message":""},"requireCompletion":false},"label":"

Your solution<\/p>\n"},{"x":5.0890585241730282,"y":52.036199095022624,"width":10,"height":10,"duration":{"from":312.14400000000001,"to":313},"libraryTitle":"Text","action":{"library":"H5P.Text 1.1","params":{"text":"

Let W be the bottle with the white liquid and B be the bottle with the black liquid. Throw out half of the liquid in W and add half of the liquid of B. The solution in W will be one-part white liquid and one-part black liquid. Again, throw out half the contents in W and put it aside. Now, B has only half of its contents left. Fill B with water and again throw out half. The remaining solution will be one-part black liquid and one-part water. Filling again and throwing out half, we obtain a solution that is one-part black liquid to three-parts water. Now mix the liquid from both bottles. The resulting solution will be three-parts black liquid, two-parts white liquid, and three-parts water.<\/p>\n"},"subContentId":"f1b75f08-f88e-4f60-8a2a-ed20d2890a2c","metadata":{"contentType":"Text","license":"U","title":"Untitled Text"}},"pause":true,"displayType":"button","buttonOnMobile":false,"visuals":{"backgroundColor":"rgb(255, 255, 255)","boxShadow":true},"goto":{"url":{"protocol":"http:\/\/"},"visualize":false,"type":""},"label":"

The solution<\/p>\n"},{"x":3.8167938931297707,"y":18.099547511312217,"width":10,"height":10,"duration":{"from":469.298,"to":470.298},"libraryTitle":"Text","action":{"library":"H5P.Text 1.1","params":{"text":"

A farmer is trying to cross a river. He is taking with him a rabbit, carrots and fox, and he has a small raft. He can only bring one (1) item a time across the river because his raft can only fit either the rabbit,the carrotsor the fox. Note that the fox does not eat the rabbit if the man is present, the rabbit does not eat the carrots if the man is present and also the fox and the rabbit are not trying to escape and run away. How many times does he need to cross the river?<\/p>\n"},"subContentId":"d7d5edb6-ead8-4e8b-8afd-4b69d777fa3e","metadata":{"contentType":"Text","license":"U","title":"Untitled Text"}},"pause":true,"displayType":"button","buttonOnMobile":false,"visuals":{"backgroundColor":"rgb(255, 255, 255)","boxShadow":true},"goto":{"url":{"protocol":"http:\/\/"},"visualize":false,"type":""},"label":"

The riddle<\/p>\n"},{"x":3.8167938931297707,"y":22.624434389140273,"width":10,"height":10,"duration":{"from":472.12700000000001,"to":473.12700000000001},"libraryTitle":"Single Choice Set","action":{"library":"H5P.SingleChoiceSet 1.11","params":{"choices":[{"subContentId":"d61fbad1-12e1-4a7b-a366-d583176526cc","question":"

How many times does the farmer cross the river<\/p>\n","answers":["

5<\/p>\n","

3<\/p>\n","

7<\/p>\n","

9<\/p>\n"]},{"subContentId":"1995791b-92f1-4940-a004-b1dc51d2cc49"}],"overallFeedback":[{"from":0,"to":100}],"behaviour":{"autoContinue":true,"timeoutCorrect":2000,"timeoutWrong":3000,"soundEffectsEnabled":true,"enableRetry":true,"enableSolutionsButton":true,"passPercentage":100},"l10n":{"nextButtonLabel":"Next question","showSolutionButtonLabel":"Show solution","retryButtonLabel":"Retry","solutionViewTitle":"Solution list","correctText":"Correct!","incorrectText":"Incorrect!","muteButtonLabel":"Mute feedback sound","closeButtonLabel":"Close","slideOfTotal":"Slide :num of :total","scoreBarLabel":"You got :num out of :total points","solutionListQuestionNumber":"Question :num"}},"subContentId":"e448e031-8465-4fb7-ad14-ce5506dd325a","metadata":{"contentType":"Single Choice Set","license":"U","title":"riddle chapter 3"}},"pause":true,"displayType":"button","buttonOnMobile":false,"adaptivity":{"correct":{"allowOptOut":false,"message":""},"wrong":{"allowOptOut":false,"message":""},"requireCompletion":false},"label":"

Your solution<\/p>\n"},{"x":2.5445292620865141,"y":20.361990950226243,"width":10,"height":10,"duration":{"from":474.12700000000001,"to":475.12700000000001},"libraryTitle":"Text","action":{"library":"H5P.Text 1.1","params":{"text":"

The key to solve this riddle is realizing that the farmer should take the rabbit over first and switch the fox with the rabbit:<\/p>\n\n

Step 1: The farmer takes the rabbit to the other side.
\nSo, in the shore there are Carrots and Fox and in the other side there are the rabbit and the farmer.<\/p>\n\n

(Everything is safe)<\/p>\n\n

Step 2:<\/p>\n\n

The farmer goes back and gets the Fox and switches it with the rabbit. The key here is that the rabbit and carrots are not being left alone.<\/p>\n\n

Now, in the shore there are Carrots, Rabbit and the farmer and in the other side there is the Fox.<\/p>\n\n

Step 3:<\/p>\n\n

The farmer takes the carrots across.<\/p>\n\n

Then, in the shore there is the rabbit and in the other side there are the farmer, carrots and fox.<\/p>\n\n

Step 4:<\/p>\n\n

Finally, the farmer goes back and gets the rabbit.<\/p>\n\n

Rabbit, Fox, carrots and the farmer are in the other side now.<\/p>\n"},"subContentId":"b279bec5-7047-4d81-8979-0f8498cf553d","metadata":{"contentType":"Text","license":"U","title":"Untitled Text"}},"pause":true,"displayType":"button","buttonOnMobile":false,"visuals":{"backgroundColor":"rgb(255, 255, 255)","boxShadow":true},"goto":{"url":{"protocol":"http:\/\/"},"visualize":false,"type":""},"label":"

The solution<\/p>\n"},{"x":5.0890585241730282,"y":31.674208144796381,"width":10,"height":10,"duration":{"from":772.654,"to":773.654},"libraryTitle":"Single Choice Set","action":{"library":"H5P.SingleChoiceSet 1.11","params":{"choices":[{"subContentId":"202945c1-77d2-4130-9b26-062f11428dde","question":"

How many diamonds?<\/p>\n","answers":["

2<\/p>\n","

4<\/p>\n","

6<\/p>\n","

7<\/p>\n"]},{"subContentId":"0ef9b1ad-814d-4fb6-a26d-5ce38c361ee5"}],"overallFeedback":[{"from":0,"to":100}],"behaviour":{"autoContinue":true,"timeoutCorrect":2000,"timeoutWrong":3000,"soundEffectsEnabled":true,"enableRetry":true,"enableSolutionsButton":true,"passPercentage":100},"l10n":{"nextButtonLabel":"Next question","showSolutionButtonLabel":"Show solution","retryButtonLabel":"Retry","solutionViewTitle":"Solution list","correctText":"Correct!","incorrectText":"Incorrect!","muteButtonLabel":"Mute feedback sound","closeButtonLabel":"Close","slideOfTotal":"Slide :num of :total","scoreBarLabel":"You got :num out of :total points","solutionListQuestionNumber":"Question :num"}},"subContentId":"61f56726-1b25-4719-b529-b595ef93029e","metadata":{"contentType":"Single Choice Set","license":"U","title":"riddle chapter 4"}},"pause":true,"displayType":"button","buttonOnMobile":false,"adaptivity":{"correct":{"allowOptOut":false,"message":""},"wrong":{"allowOptOut":false,"message":""},"requireCompletion":false},"label":"

Your solution<\/p>\n"},{"x":2.5445292620865141,"y":42.986425339366519,"width":10,"height":10,"duration":{"from":775.05600000000004,"to":776.05600000000004},"libraryTitle":"Text","action":{"library":"H5P.Text 1.1","params":{"text":"

The solution is here<\/a><\/p>\n"},"subContentId":"6566b083-c7eb-4155-ade0-d03bae7877fd","metadata":{"contentType":"Text","license":"U","title":"Untitled Text"}},"pause":true,"displayType":"button","buttonOnMobile":false,"visuals":{"backgroundColor":"rgb(255, 255, 255)","boxShadow":true},"goto":{"url":{"protocol":"http:\/\/"},"visualize":false,"type":""},"label":"

The solution<\/p>\n"},{"x":3.8167938931297707,"y":24.886877828054299,"width":10,"height":10,"duration":{"from":856.846,"to":857.846},"libraryTitle":"Text","action":{"library":"H5P.Text 1.1","params":{"text":"

When I was 6 years old, my sister was 3 years old. Now I am 26 years old, how old is my sister?<\/p>\n"},"subContentId":"0f4da1e8-947e-4e22-b119-8509dd67a9da","metadata":{"contentType":"Text","license":"U","title":"Untitled Text"}},"pause":true,"displayType":"button","buttonOnMobile":false,"visuals":{"backgroundColor":"rgb(255, 255, 255)","boxShadow":true},"goto":{"url":{"protocol":"http:\/\/"},"visualize":false,"type":""},"label":"

The riddle<\/p>\n"},{"x":5.0890585241730282,"y":22.624434389140273,"width":10,"height":10,"duration":{"from":859.72799999999995,"to":869.72799999999995},"libraryTitle":"Single Choice Set","action":{"library":"H5P.SingleChoiceSet 1.11","params":{"choices":[{"subContentId":"237d0e93-56bd-4eb0-9ea7-a04caa7d0a69","question":"

How old is my sister?<\/p>\n","answers":["

22, 23 or 24<\/p>\n","

13<\/p>\n","

23<\/p>\n"]},{"subContentId":"734d3613-3c99-4c92-a43b-9e4457b958d7"}],"overallFeedback":[{"from":0,"to":100}],"behaviour":{"autoContinue":true,"timeoutCorrect":2000,"timeoutWrong":3000,"soundEffectsEnabled":true,"enableRetry":true,"enableSolutionsButton":true,"passPercentage":100},"l10n":{"nextButtonLabel":"Next question","showSolutionButtonLabel":"Show solution","retryButtonLabel":"Retry","solutionViewTitle":"Solution list","correctText":"Correct!","incorrectText":"Incorrect!","muteButtonLabel":"Mute feedback sound","closeButtonLabel":"Close","slideOfTotal":"Slide :num of :total","scoreBarLabel":"You got :num out of :total points","solutionListQuestionNumber":"Question :num"}},"subContentId":"fedc8233-43f1-4119-8d21-b60a185a33d6","metadata":{"contentType":"Single Choice Set","license":"U","title":"riddle chapter 5"}},"pause":false,"displayType":"button","buttonOnMobile":false,"adaptivity":{"correct":{"allowOptOut":false,"message":""},"wrong":{"allowOptOut":false,"message":""},"requireCompletion":false},"label":"

Your solution<\/p>\n"},{"x":5.0890585241730282,"y":40.723981900452486,"width":10,"height":10,"duration":{"from":863.24900000000002,"to":864.24900000000002},"libraryTitle":"Text","action":{"library":"H5P.Text 1.1","params":{"text":"

Since birth date and month of each of us, and also the month and year of which the statement is being made is not communicated, the three years named above are correct.<\/p>\n\n

(i) 22 years: If my sister was born in the month of say June,1995 and I was born in January 1992 and I made the statement say on February, 2018 that means we are in a new year yes I have turned a year older but my sister hasn\u2019t turned a year old.<\/p>\n\n

(ii) 23 years: If my sister was born in the month of say February, 1995 and I was born in January, 1992 and I made the statement say on March, 2018 that means we are in a new year yes and all of us have turned a year older.<\/p>\n\n

Quest of the lost Fields Medal