Question

Tolong bantuin ya no 4

Answer 1

Bilangan ganjl antara 1 sampai 100
3 + 5 + 7 +.... + 99
a = 3, b = 2
Un = 99
Un = a + (n - 1)b
99 = 3 + (n - 1)2
99 = 3 + 2n - 2
99 = 1 + 2n
98 =2n
49 = n