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hardikasawa

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Charlie and the Chocolate Factory

21

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Multiples of 8 plus 1

Odd number squares can be written as : (2n-1)^2 , n>1 (2N-1)^2 = 4nn - 4n +1 =4n(n-1) + 1 For any n>1 , n(n-1) will always be even => 4n(n-1) + 1 => 8*x +1 where x=n(n-1)/2

hence Odd no square can always be written as 8x+1

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Charlie and the Chocolate Factory

22 actually.. didn't realize in end he will have 2 wrappers + 1 chocolate => 3 chocolates..

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