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The Payphone Problem Maths Coursework "I will be investigating a pay phone problem in which I will be using some information and my knowledge to guide me. I will have to make predictions and conclusion's and use tables to show my work." A pay phone will take only 10p, 20p, 50p and £1 coins. A woman has plenty of 10p and 20p coins. She has no other coins. She can put the coins into the pay phone in any other. Question? 1. The woman is going to make a phone call costing any multiple of 10p. Investigate the number of different ways she could put 10p and 20p coins into the payphone. Prediction I predict that my table will have a relationship and show me how to find a sequence or the nth term. Table. Amount of money Ways of putting it in (in order)/ No of ways to put it in (in order) 10p 10p 1 20p 10p + 10p 20p 2 1+1 30p 10p +...

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