September 2018 2 74 Report
-1+2-3+4-5+6-7+8-........+100
Bagaimna cara menyelesaikan ini dengan pola bilangan ???


Caranya seperti 2+4+6+8+10+......+100
S1 : 1
S2: 2+4 =6
S3: 2+4+6=12
S4: 2+4+6+8=20
S5; 2+4+6+8+10= 30

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