August 2018 1 8 Report
Tentukan hasil dari ( tanpa menghitung satu persatu ) !

a . 1 + 3 + 5 +7+ 9 + ...... + 99 .

b. 1 - 2 + 3 - 4 + 5 - 6 + 7 - 8 + ...... - 100.

C. -100 - 99 - 98 - ....... - 2 - 1 - 0 + 1 + 2 + ..... + 48 + 49 + 50.

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