Question

Find the 10th term in the GP: 5,25,125,............

• A. $$5^{11}$$
• B. $$5^{8}$$
• C. $$5^{10}$$
• D. $$5^{9}$$

Answer 1

Answer:

$$5^{10}$$

$a=5, r=25/5=5$

$a_n=ar^{(n-1)}$

$a_{10}=5\times5^9$

$=5^{10}$