tentukan suku ke 10 : A. 1,3,5,7,... B. 2,4,6,8...

(A.) 1,3,5,7, ....

a = 1, b = 2,
Un = 1 + 2(n - 1)
U10 = 1 + 2(10 - 1)
U10 = 1 + 18
U10 = 19

(B.) 2,4,6,8, ....

a = 2, b = 2
Un = 2 + 2 (n - 1)
U10 = 2 + 2(10 - 1)
U10 = 2 + 18
U10 = 20

Semoga membantu ^^
#cmiiw