2+3+4+.........+50=.......
Matematika
wasnifitri
Pertanyaan
2+3+4+.........+50=.......
1 Jawaban
-
1. Jawaban 0reyes0
=>S49=n/2(2a+(n-1)b)
=49/2(2.2+(49-1)1)
=49/2(54)
=1323
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