Problema Solution
A geometric sequence has 6 for its second term an 486 for its sixth term. What is the sum of the first eight terms?
Answer provided by our tutors
:Second term is 6
Sixth term is 486
ar=6
ar^5=486
the value of a=2 r=3
Sum of eight terms 2+6+18+54+162+486+1458+4374=6560