Question

What is the fifth term of the sequence whose first term is 10 and whose common ratio is ?

a. 160
b. 50
c. 12
d. 5/8

Answer 1

The common ratio is 1/2

Answer 2

okay then
\[a_5 = a_1 \times r^{5- 1}\]

Answer 3

plug a_1 i.e first term and r i.e common ratio

Answer 4

what do all the letters stand for? :(

Answer 5

ohhhhh

Answer 6

see the nth term in geometric sequence is

\[a_n = a_1 \times r^{n - 1}\]

Answer 7

Thanks i got it D was the answer!!

Answer 8

yup correct.... :))