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Charlie and the Chocolate Factory
21 context |
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 context |
Charlie and the Chocolate Factory
22 actually.. didn't realize in end he will have 2 wrappers + 1 chocolate => 3 chocolates.. context |