Question

Nilai suku ke-10 barisn 7,13,23,37,...,adalah...

Answer 1

7, 13, 23, 37, ...
beda
= 13 - 7 = 6 (+4)
= 23 - 13 = 10 (+4)
= 37 - 23 = 14 (+4)
Suku ke-5
= 37 + (14+4)
= 37 + 18 = 55
Suku ke-6
= 55 + (18+4)
= 55 + 22 = 77
Suku ke-7
= 77 + (22+4)
= 77 + 26 = 103
Suku ke-8
= 103 + (26+4)
= 103 + 30 = 133
Suku ke-9
= 133 + (30+4)
= 133 + 34 = 167
Suku ke-10
= 167 + (34+4)
= 167 + 38 = 205
Jadi, suku ke-10 = 205