1+2+3....+49+50=s berapa s?
Matematika
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Pertanyaan
1+2+3....+49+50=s
berapa s?
berapa s?
2 Jawaban
-
1. Jawaban Beta27
50/2(2.1+(50-1)1)
25(2+(49.1)
25(2+49)
25.51
1275 -
2. Jawaban IvanaA
[(50 - 1 + 1) x (50 + 1)] : 2 x 1
[50 x 51] : 2
2550 : 2 = 1275
Jadi, s = 1275