Question

Calcule a soma dos 10 primeiros termos da PG(10,20...)

Answer 1

S = a1*(q^10 - 1)/ q -1
q = 2

S = 10 ( 2^10 -1)/ 2-1

S = 10 ( 2^10 -1)

S = 10 ( 1024 - 1)

S = 10 * 1023

S = 10230