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THE RISKS OF LIFE Video Conference #3 Scams & Cons

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Psychic Powers How does this card trick work?

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The shuffle Cards are ordered Cutting the cards does not change the cyclic order. For example, a cut between 2 and 3 will move the card order to , but the original is still there.

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The 5 Card Piles the secret move Assume cards are in their original order…….. Counting 5 cards gives in one pile and in another. This is a PALINDROMIC STACK (values in one pile are exactly reversed in the other)

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The Swaps The number of swaps is always one less than the number of cards in the pile. Consider only 3 card values. You could do 2 swaps in the first pile OR 2 swaps in the second pile OR 1 swap in the first pile and 1 swap in the second pile

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2 swaps in the first pile

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2 swaps in the first pile

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2 swaps in the first pile

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2 swaps in the first pile

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2 swaps in the second pile

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2 swaps in the second pile

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2 swaps in the second pile

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1 swap in the first pile 1 swap in the second pile

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1 swap in the first pile 1 swap in the second pile

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1 swap in the first pile 1 swap in the second pile

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Maths behind the Scam This will work any number of cards N that are placed in order in palindromic stacks. When we make N-1 swaps, as one card is moved down its equivalent rises in the other stack so that the ones meeting on top of the piles match.

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Monty Hall Problem Probability puzzle based on an American Gameshow Lets Make a Deal Named after the host Monty Hall

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Numbers Monty Hall 2009

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Monty Hall Activity In pairs, use your cups and prize to simulate the Monty Hall problem. Try swapping and not swapping as many times as possible. Decide on one of the following conclusions: To increase your chances of winning you should: Swap? Not Swap? Does it matter?

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Monty Hall Activity SwapNot Swap Win Lose

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Results (% of wins) WydeanSt Josephs Karachi Swap Dont Swap

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BBC Horizon, Broadcasted 1 st April 2009 Alan and Marcus Go Forth and Multiply

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Swap or Not? CUP 1CUP 2CUP 3 Scenario 1Car Scenario 2Car Scenario 3Car

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Swap or Not? CUP 1CUP 2CUP 3 Scenario 1Car Scenario 2Car Scenario 3Car

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Swap or Not? CUP 1CUP 2CUP 3 Scenario 1Car Scenario 2Car Scenario 3Car

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Swap or Not? CUP 1CUP 2CUP 3 Scenario 1Car Scenario 2Car Scenario 3Car

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Swap or Not? CUP 1CUP 2CUP 3 Scenario 1Car Scenario 2Car Scenario 3Car

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Swap or Not? CUP 1CUP 2CUP 3 Scenario 1Car Scenario 2Car Scenario 3Car DONT SWAP

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Swap or Not? CUP 1CUP 2CUP 3 Scenario 1CarLOSE Scenario 2Car Scenario 3Car DONT SWAP

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Swap or Not? CUP 1CUP 2CUP 3 Scenario 1CarLOSE Scenario 2CarWIN Scenario 3Car DONT SWAP

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Swap or Not? CUP 1CUP 2CUP 3 Scenario 1CarLOSE Scenario 2CarWIN Scenario 3CarLOSE DONT SWAP

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Swap or Not? CUP 1CUP 2CUP 3 Scenario 1CarLOSE Scenario 2CarWIN Scenario 3CarLOSE DONT SWAP CUP 1CUP 2CUP 3 Scenario 1Car Scenario 2Car Scenario 3Car SWAP

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Swap or Not? CUP 1CUP 2CUP 3 Scenario 1CarLOSE Scenario 2CarWIN Scenario 3CarLOSE DONT SWAP CUP 1CUP 2CUP 3 Scenario 1CarWIN Scenario 2Car Scenario 3Car SWAP

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Swap or Not? CUP 1CUP 2CUP 3 Scenario 1CarLOSE Scenario 2CarWIN Scenario 3CarLOSE DONT SWAP CUP 1CUP 2CUP 3 Scenario 1CarWIN Scenario 2CarLOSE Scenario 3Car SWAP

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Swap or Not? CUP 1CUP 2CUP 3 Scenario 1CarLOSE Scenario 2CarWIN Scenario 3CarLOSE DONT SWAP CUP 1CUP 2CUP 3 Scenario 1CarWIN Scenario 2CarLOSE Scenario 3CarWIN SWAP

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THE SYSTEM

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Channel 4 Broadcast. 1 st February Derren Brown, The System.

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81 people

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7776 people

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Channel 4 Broadcast. 1 st February Derren Brown, The System.

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Pyramid Selling Compulsory Investigation Lindis Womens Networking Scheme You invest £3,000 with the promise of £24,000 in return! How does this scheme work? What is the problem with this scheme? Why is it illegal?

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Video Conference #4 Be Prepared! (Thursday March 25 th ) Follow-up work Presentations Mathionaire (part 2: £1,000 - £32,000) Remember to look at the compulsory investigation question on the website as one question will be based on it.

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