Jun 28th, 2015
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Academy of Art University
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Alchemy = Witchcraft ( Vodo! ) let us "study to show ourselves approved!"

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SimpleEquationsThe teacher has said that she would be starting a new chapter inmathematics and it is going to be simple equations. Appu, Saritaand Ameena have revised what they learnt in algebra chapter inClass VI. Have you? Appu, Sarita and Ameena are excited becausethey have constructed a game which they call mind reader and theywant to present it to the whole class.The teacher appreciates their enthusiasm and invites them to present their game. Ameenabegins; she asks Sara to think of a number, multiply it by 4 and add 5 to the product. Then,she asks Sara to tell the result. She says it is 65. Ameena instantly declares that the numberSara had thought of is 15. Sara nods. The whole class including Sara is surprised.It is Appus turn now. He asks Balu to think of a number, multiply it by 10 and subtract20 from the product. He then asks Balu what his result is? Balu says it is 50. Appuimmediately tells the number thought by Balu. It is 7, Balu confirms it.Everybody wants to know how the mind reader presented by Appu, Sarita andAmeena works. Can you see how it works? After studying this chapter and chapter 12,you will very well know how the game works.on4.2 SETTINGdehsTilRbEuCpeN erbott4.1 A MIND-READING GAME!UP OF ANEQUATIONLet us take Ameenas example. Ameena asks Sara to think of a number. Ameena does notknow the number. For her, it could be anything 1, 2, 3, . . ., 11, . . . , 100, . . . . Let usdenote this u

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