39+52+65+......+247= .... Pakai penjelasan ya kk.... Question from @Dindacahya98

March 2019 2 18 Report

39+52+65+......+247= ....
Pakai penjelasan ya kk

liuchristoper13 Setiap ke arah kanan itu nambah 13
247=39 + (n-1)13
208=13 (n-1)
16=n-1
N=17
S17=17÷2 (247+39)
=2431

1 votes Thanks 1

Nabilaharmy 39+52+65+.....+247=2431
kan keliatan polanya kalo itu ditambah 13 terus.

0 votes Thanks 0

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