1+2+3+4+5+6+7+8+9..... +100=??
Matematika
nazwa476
Pertanyaan
1+2+3+4+5+6+7+8+9..... +100=??
1 Jawaban
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1. Jawaban Machzen
A = 1
B = 2-1 = 1
Un = 100
S100 :
= n/2 [2a + (n-1) x b]
= 100/2 [2 x 1 + (100-1) x 1]
= 50 [2 + 99]
= 50 x 101
= 5050