Question

2+4+6+.....100
Sn = ?

pake cara nya ya, makasih ​

Answer 1

Verified answer

Penjelasan dengan langkah-langkah:

2+4+6+.....100

Sn = ?

a = 2 b = 2 Un = 100

[tex]Un = a + (n - 1)b = 100 \\ 2 + (n - 1)2 = 100 \\ 2 + 2n - 2 = 100 \\ 2n = 100 \\ n = 50[/tex]

[tex]Sn = \frac{n}{2} (a + un) \\ Sn = \frac{50}{2} (2 + 100) \\ Sn = 25(102) \\ Sn = 2550[/tex]