Respuesta :

(a)first term=2

(n)no of term=10

(r)common ratio=8/2=4

sn={a(r^n-1)}÷(r-1)

s1o={2(4^10-1)}÷(4-1)

s10={2(1048576-1)}÷3

s10=2097150÷3

s1o=699050