50 + 100 + 150 + 200+....+50.000=
Matematika
Anonyme
Pertanyaan
50 + 100 + 150 + 200+....+50.000=
2 Jawaban
-
1. Jawaban Brillianttt
a = 50, b = 50
Un = b.n
50000 = 50n
n = 1000
Sn = n/2 (a+Un)
S 1000 = 1000/2 ( 50+ 50000)
= 500. 50050
= 25025000 -
2. Jawaban IvanaA
50 + 100 + 150 + 200+....+50.000=
Jwb :
[(50000 - 50 + 50) x (50000 + 50)] : 2 x 50
[50000 x 50050] : 100
=25.025.000