Would it not be simpler to add:
100 99 + 1 98 + 2
til
51 + 49
giving 50 x 100
then just add on the 50?
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Avoiding multiplying
Would it not be simpler to add:
100
99 + 1
98 + 2
til
51 + 49
giving 50 x 100
then just add on the 50?